For the reaction: CO(g) + H2O(g) ⇌ CO2(g) + H2(g) the value of Kc is 1.845 at a specific temperature. We place 0.500mol CO and 0.500mol H2O in a 1.00L container at this temperature and allow the reaction to reach equilibrium. Determine the equilibrium concentration of all species present in the container.

Answers

Answer 1

Answer:

Explanation:

In the equilibrium:

CO(g) + H₂O(g) ⇄ CO₂(g) + H₂(g)

Kc is:

Kc = 1.845 = [CO₂] [H₂] / [CO] [H₂O]

Where [] are equilibrium concentrations of each species

Initial concentrations:

[CO] = 0.500mol / 1.00L = 0.500M

[H₂O] = 0.500mol / 1.00L = 0.500M

In equilibrium, concentrations will be:

[CO] = 0.500M - X

[H₂O] = 0.500M - X

[CO₂] = X

[H₂] = X

Where X is reaction coordinate. The amount of reactant that reacts producing products.

Replacing in Kc expression:

1.845 = [CO₂] [H₂] / [CO] [H₂O]

1.845 = [X] [X] / [0.500M - X] [0.500M - X]

1.845 = X² / X² - X + 0.25

1.845X² - 1.845X + 0.46125 = X²

0.845X² - 1.845X + 0.46125 = 0

Solving for X:

X = 0.288M; Right solution

X = 1.9M; False solution: Produce negative concentrations.

Replacing, equilibrium concentrations are:

[CO] = 0.500M - X = 0.212M

[H₂O] = 0.500M - X = 0.212M

[CO₂] = X = 0.288M

[H₂] = X = 0.288M


Related Questions

Frank drank 2 liters of soda. How many mL of soda did he drink?

Answers

Im two liters there are 1500 ml

Answer:

2000 mL

Explanation:

1 L = 1000 mL

Therefore,

2 L = 2 x 1000 mL = 2000 mL

what are different type of plastids explain them?​

Answers

Answer:

Explanation:

There are 3 types of plastids :-

1) Chloroplasts:- The green plastids which contain chlorophyll pigments for photosynthesis.

2) Chromoplasts:-The coloured plastids for pigment synthesis and storage.

3) Leucoplasts:- The colourless plastids for monoterpene synthesis found in non- photosynthetic parts of the plants.

They are of three types:-  

a) Amyloplasts- stores starch.

b) Proteinoplasts-  stores proteins.

c) Elaioplasts- stores fats and oils.

An air mass that originates over land in central america is most likely

Answers

Answer: An air mass that originates over land in Central America is most likely warm & dry.

Which of the following is considered to be a chemical property of matter?

Answers

Answer: Meteorhpayne

Explanation: Correct me if im wrong :(

Convert 3.48 Km into millimeters. The correct answer with correct units is:

A.)0.000000348M
B.)3. 4800 Mm
C.)3,480,000 mm
D.) 3, 480,000,000 mm

Answers

Answer:

C- 3480000mm

Explanation:

3480000mm

why is sodium chloride soluble in water

Answers

Answer: because the very polar water molecules attract both the positively charged sodium ions and the negatively charged chloride ions.

PLEASE HELP I HAVE THIS TEST TOMORROW AM GIVING MORE POINTS THAN I SHOULD!
An unlit match contains approximately 1,000 J of chemical energy. When it burns, the match releases thermal energy and light energy. After it has burned, the remaining match contains 250 J of chemical energy. If the thermal energy was measured to be 400 J, how much light energy did the match emit? ​

Answers

Answer:

match emit 350 J light energy.

Explanation:

By law of conservation of energy,  total energy before and after reaction for an isolated system remains constant.

Total energy for unlit match = 1000 j

When it burns type of energy released

thermal energy = 400 j

light energy --> it value is unknown which we have to find

also remaining match has 250 joule of chemical energy

applying   law of conservation of energy

energy before match was unlit = energy after match was lit

1000 j = thermal energy + light energy + chemical energy of remaining match

1000 J = 400 J  + light energy + 250 J

light energy = 1000 J - 400J - 250J

light energy = 350 J

Thus, match emit 350 J light energy.

How can a new element be made?

Answers

Answer:

adding or removing protons

Explanation:

Elements are defined by the number of protons they have. If you add or subtract protons then that changes and makes a new element.

Answer:

by changing the number of protons in the nucleus

If you drop an object with a mass of 3.66 grams and a volume of 4 mL into a beaker containing dish soap, would it float or sink? Dish soap has a density of 0.93 g/mL

Answers

It would most definitely sink

0.15 m acetic acid/sodium acetate aqueous buffer at ph 4.5 is diluted to a concentration of 0.1 m with the addition of water what is the pH of the resulting buffered solution

Answers

Answer:

Explanation:

A mixture of a weak acid and its conjugate base (or a mixture of a weak base and its conjugate acid) is called a buffer solution, or a buffer. Buffer solutions resist a change in pH when small amounts of a strong acid or a strong base are added (Figure 1). A solution of acetic acid and sodium acetate (CH3COOH + CH3COONa) is an example of a buffer that consists of a weak acid and its salt. An example of a buffer that consists of a weak base and its salt is a solution of ammonia and ammonium chloride (NH3(aq) + NH4Cl(aq)).

The pH of the resulting buffer solution is 6.60.

How to calculate pH of acidic  buffer solution?

pH of acidic  buffer solution is calculated by Henderson equation which is,

    pH =pK[tex]_a[/tex] +log[salt]/log[acid]

As the buffer is diluted the concentration is reduced to half, that is

[acid]=0.075 M

[salt]=0.02 M    pK[tex]_a[/tex]=4.74

substituting these values in Henderson's equation for acid buffers,

pH=4.74+log[0.075]/[0.02]

     =6.6071

Thus, the pH of resulting buffer solution is 6.6071.

Acid buffers  consist of a solution  of weak acid  and its salt.A commonly used acid buffer is  prepared by mixing  acetic acid and sodium acetate.

Henderson equation is used to calculate pH of buffer solution and ratio of salt to acid to prepare acid solution. pK[tex]_a[/tex] for acid buffers is constant.

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The typical capacity for human lungs is approximately 5800 mL. At a temperature of 37C (average body tempurature) and pressure of 0.98 atm, how many moles of air do we carry inside our lungs?

Answers

Answer:

0.22 moles of air we carry inside our lungs.

Explanation:

An ideal gas is a theoretical gas that is considered to be composed of point particles that move randomly and do not interact with each other. Gases in general are ideal when they are at high temperatures and low pressures.

The gas laws are a set of chemical and physical laws that allow determining the behavior of gases in a closed system. The parameters evaluated in these laws are pressure, volume, temperature and moles.

The ideal gas law is an equation that relates the variables pressure P, temperature T and volume V if the amount of substance, number of moles n, remains constant and where R is the molar constant of the gases as follows:

P * V = n * R * T

In this case:

P= 0.98 atmV= 5800 mL= 5.8 L (being 1,000 mL= 1 L)n= ?R= 0.082 [tex]\frac{atm*L}{mol*K}[/tex]T= 37 C= 310 K (being 0 C= 273 K)

Replacing:

0.98 atm* 5.8 L= n* 0.082 [tex]\frac{atm*L}{mol*K}[/tex] * 310 K

Solving:

[tex]n=\frac{0.98 atm* 5.8 L}{0.082 \frac{atm*L}{mol*K} *310 K}[/tex]

n= 0.22 moles

0.22 moles of air we carry inside our lungs.

List 3 common examples of physical changes

Answers

crushing a can
breaking glass
boiling water

Answer: crushing a can, boiling water, breaking a glass

Explanation:

Q: A wind-up toy that is not wound up...
(drag the check on one)
does not have energy.
has potential energy.
has kinetic energy
has both kinetic and potential energy
S

Answers

Does not have energy

A wind-up toy that is not wound up will have Potential Energy Hence, The correct option is Option (B)

What is potential energy ?

Potential energy is that the energy control by associate object due to its position relative to alternative objects, stresses among itself, its charge, or alternative factors.

The total energy of a mechanical toy is given as follows ;

Total Mechanical Energy = Kinetic Energy + Potential Energy

During the winding up of the coil, the total energy becomes the kinetic energy

The total energy at the point of winding up of the coil = The kinetic energy supplied to the toy by winding the coil

From the first law of thermodynamics, energy can not be created nor destroyed however may be modified from one type to a different

Due to the coil being prevented from unwinding, the kinetic energy stored as Potential energy of the toy

When the toy is operated it then unwinds the coil bringing about motion and converting back the potential energy to kinetic energy by itself as if it was alive.

Therefore, A wind-up toy that is not wound up will have Potential Energy Hence, The correct option is Option (B)

Learn more about Potential Energy here ;

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Scientific predictions can best be described as: a Problems you expect to identify b Questions you expect to ask c Experiments you expect to run d Evidence you expect to find

Answers

Answer:

Explanation:a

Scientific predictions are best described as consistent data that are presented in the form of if and then. It is a solution to the problem that may be identified. Thus, option a is correct.

What is scientific prediction?

Scientific prediction is a statement that describes the events of the future that are not always correct or incorrect. In scientific research, the experiment is conducted based on the hypothesis to draw conclusions and results that are expected.

The expected results are said to be scientific predictions when they are represented in the form of "if and then" before the analysis of the experimental method and its result are done. It is an account of the events that may possibly take place under specific conditions.

Therefore, option A. scientific prediction is an expected problem.

Learn more about scientific predictions, here:

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ASAP!
A solution is made by dissolving 125 g of sodium chloride in 1.5 kg of water. What is the percent by mass?​

Answers

Answer:

8.3334%

Explanation:

You have two masses. To find the percent of sodium chloride in water by mass, you divide the mass of NaCl by water. First, make both units the same. Easiest is to convert kg into g. 1.5kg = 1500g

125g NaCl/1500g H2O = 0.0833333333 ==> 8.3334%

How many significant figures are in 10.060 L?

Answers

Answer:

5

Explanation:

you have two zeros that are sandwiched in between and one following a signifincant figure after the decimal.

she adds 1.5 mL, 0.75 mL, and 1.2 mL. Her measurements of the oil are blank

Answers

Answer:

The total measurements of the oil is 3.45mL

Explanation:

Given

1.5 mL, 0.75 mL, and 1.2 mL.

Required

Determine the total

To get the total, we simply add the given volumes together.

[tex]Total = 1.5 mL+ 0.75 mL + 1.2 mL[/tex]

[tex]Total = 3.45mL[/tex]

Hence;

The total measurements of the oil is 3.45mL

A small rock with the mass of 6 g is dropped into a graduated cylinder with 20 mL of water. The water rises to 23 mL. What is the density of the rock?

Answers

Answer: The density of the rock is 2g/mL. Hope this helped! :)

Explanation:

V= 3.0mL                                                               D=M/V

M= 6.0g

D=6.0g/3.0mL

D= 2.0g/mL

Which statement accurately compares the trends in atomic number and atomic mass in the periodic table

Answers

the  Answer is C

Both the atomic mass and the atomic number increase from left to right.

Answer: is C

Explanation:

Both the atomic mass and the atomic number increase from left to right

A jeweler has five rings, each weighing g, made of an alloy of silver and gold. She decides to melt down the rings and add enough silver to reduce the gold content to . How much silver should she add

Answers

Complete question :

A jeweler has five rings, each weighing 18 g, made of an alloy of 10% silver and 90% gold. She decides to melt down the rings and add enough silver to reduce the gold content to 75%. How much silver should she add?

Answer:

Kindly check explanation

Explanation:

Given the following :

Weight of each alloy = 18g

Initial % of Silver = 10% = 0.1

Initial % of Gold = 90% = 0.9

New % of gold = 75% = 0.75

Hence, new % of silver will be (1 - 0.75) = 0.25

Let the amount of silver to be added = s

Hence,

Initial gold content = final gold content + added silver

18 * 0.9 = 0.75(18 + s)

16.2 = 13.5 + 0.75s

16. 2 = 13.5 + 0.75s

16.2 - 13.5 = 0.75s

2.7 = 0.75s

s = 2.7 / 0.75

s = 3.6

S = 3.6

Hence the amount of silver needed per ring in other to reduce the gold content = 3.6g

Total for the 5 rings = (3.6 * 5) = 18g

Which statements differentiate DNA and RNA? Check all that apply.

Answers

DNA is 2 strands and RNA is only one strand

Answer:

A:DNA is a double helix, and RNA is a single strand.

C:DNA is involved only in transcription, and RNA is involved in both transcription and translation.

E:DNA does not have uracil as a nitrogen base, but RNA does have uracil as a nitrogen base.

Explanation:

I did the test an Edge.

convert 0.00043 dam to hm

Answers

4.3e-5hm coverted answer

How does scientists benefit society

Answers

Answer:

scientists benefit the society because they prove many theories, plus they are always finding new solutions to new things

Explanation:

Answer:

The scientist uses specialized training to help solve problems

faced by society.

Explanation:

A P E X

In carbon dioxide (CO2), how many grams of oxygen (O) would there be if there are 24 grams of carbon (C)?

Answers

Answer:

64g of Oxygen

Explanation:

Firstly, carbon and oxygen react to form CO2 as follows;

C + O2 => CO2

According to the equation, one mole of C reacts with one mole of O2 to give one mole of CO2

Since molar mass of C= 12g/mol, O= 16g/mol

One mole of (C) contains 12g

One mole of O2 contains 16(2) = 32g

Hence, If there are 24g of C, there would be 24 × 32 / 12

= 768/12

= 64g

Hence, there would be 64g of oxygen if there are 24g of Carbon

Should your height be measured in meters or centimeters

Answers

Your height should be measured in meters. Centimeters is much too small of a unit to measure the several feet most people are.

need help asp thank you​

Answers

Answer:

formed at earths surface

Explanation:

so easy

Put the following elements in order according to the number of protons they contain: S; Si, Sc; Na Reorder answers 1.Si Reorder answers 2.S Reorder answers 3.Sc Reorder answers 4.Na

Answers

Answer:

he oxygen ion you have with 8 protons attracting 10 electrons is larger, ... As a result, the 3Al3+ ion will be smaller than the Si element, which has ... O<Al3+<Si<Al<O2-<Ag<Rb<Cs ... It is fairly easy to arrange the atoms according to atomic size. ... I would put it between Al and Ag .

Explanation:

HELP BRAINLIESTTTT
What best describes the bonding in a water molecule? (1 point)
a
An oxygen atom shares an electron pair with each H atom.
b
An oxygen atom shares a single electron with each H atom.
c
An oxygen atom receives an electron from each H atom.
d
An oxygen atom transfers an electron to each H atom.

Answers

Answer:

l guess c is the answer

Explanation:

it is true because in oxygen does not share any atoms with hydrogen

Answer:

A

Explanation:

taking test currently

While burning coal and charcoal, you notice that coal releases more heat than charcoal. That means that the... 1. elastic energy 2.gravitational energy 3.chemical potential energy is 1.lower 2. higher in charcoal than in coal

Answers

Answer:

3). Chemical potential energy

1). lower in charcoal than in coal.

Explanation:

Chemical potential energy is defined as the energy that can be absorbed or stored in a substance's chemical bonds. It can be released when there is a change in the number of particles of the substance.

As per the question, coal releases more heat than charcoal because 'the chemical potential energy of charcoal is lower than the coal' and hence, the latter would release more heat on burning i.e. the energy that was absorbed in the chemical bonds of the substance. Hence, option 3 and 1 are the correct answers.

Question 2

Which statement describes a change of matter that I DIFFERENT from the others?

A

Peroxide breaking down into water and oxygen

B

Bubbles forming when a pot of water is heated

A pair of jeans soaked in water drying after hanging outside

D

A block of ice decreating in size due to a change in temperature

Answers

Answer:

A.  Peroxide breaking down into water and oxygen

Explanation:

Generally when it comes to changes, there are physical and chemical changes. In physical changes, there are no new substances been formed, however in chemical change new substances are formed.

A.  Peroxide breaking down into water and oxygen

This is a chemical change.

B . Bubbles forming when a pot of water is heated

This is a physical change

C. A pair of jeans soaked in water drying after hanging outside

This is a physical change

D . A block of ice decreasing in size due to a change in temperature

This is a physical change.

Only option A is different from the rest,hence this is the answer.

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