Question

For the following reaction, Kc = 255 at 1000 K. CO (g) + Cl2 (g) ⇌...

For the following reaction, Kc = 255 at 1000 K.
CO (g) + Cl2 (g) ⇌ COCl2 (g)
A reaction mixture initially contains a CO concentration of 0.1470 M and a Cl2 concentration of 0.172 M at 1000 K.

Part A

What is the equilibrium concentration of CO at 1000 K?

Express your answer in molarity to three significant figures.

Part B

What is the equilibrium concentration of Cl2 at 1000 K?

Express your answer in molarity to three significant figures.

Part C

What is the equilibrium concentration of COCl2 at 1000 K?

Homework Answers

Answer #1

Given,

Kc = 255 at 1000 K

Initial concentrations, [CO]i = 0.1470 M, [Cl2]i = 0.172 M

At equilibrium, Kc = [COCl2] / [CO] [Cl2]

Condition [CO] [CO] [COCl2]
Initial 0.1470 0.172 0
Change -x -x +x
Equilibrium 0.1470-x 0.172-x x

Kc = x / (0.1470-x)(0.172-x)

or 255 = x / (x2 - 0.319x + 0.0253 )

   255x2 - 82.345 x + 6.452 = 0

solving for x,

x = [−b ± √(b2−4ac)] / 2a

   = [- (-82.345) ± √ {(-82.345)2 - 4(255)(6.452)}] / 2(255)

   = [82.345 ± 14.13] / 510

now, x = 0.189 or 0.133

Because there are two possible solutions, we have to determine which is the real solution.

[CO]i - 0.189 = 0.1470 - 0.189 = - 0.042

[Cl2]i - 0.189 = 0.172 - 0.189 = - 0.017

So, possible value of x is 0.133

Thus at equilibrium (at 1000 k),  

Part A : [CO] = 0.01470 - x = 0.1470 - 0.133 = 0.014 M

Part B : [Cl2] = 0.172 - 0.133 = 0.039 M

Part C : [COCl2] = 0.133 M

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
For the following reaction, Kc = 255 at 1000 K. CO (g) + Cl2 (g) ⇌...
For the following reaction, Kc = 255 at 1000 K. CO (g) + Cl2 (g) ⇌ COCl2 (g) A reaction mixture initially contains a CO concentration of 0.1510 M and a Cl2 concentration of 0.172 M at 1000 K. What is the equilibrium concentration of CO at 1000 K. What is the equilibrium concentration of Cl2 at 1000 K. What is the equilibrium concentration of COCl2 at 1000 K. Express your answer in molarity to three significant figures
For the following reaction, Kc = 255 at 1000 K. CO (g) + Cl2 (g) ⇌...
For the following reaction, Kc = 255 at 1000 K. CO (g) + Cl2 (g) ⇌ COCl2 (g) A reaction mixture initially contains a CO concentration of 0.1530 M and a Cl2 concentration of 0.176 M at 1000 K. Part A What is the equilibrium concentration of CO at 1000 K? Express your answer in molarity to three significant figures. Part B What is the equilibrium concentration of Cl2 at 1000 K? Express your answer in molarity to three significant...
For the following reaction, Kc = 255 at 1000 K. CO (g) + Cl2 (g) ⇌...
For the following reaction, Kc = 255 at 1000 K. CO (g) + Cl2 (g) ⇌ COCl2 (g) A reaction mixture initially contains a COconcentration of 0.1490 M and a Cl2concentration of 0.177 M at 1000 K. Part B What is the equilibrium concentration of Cl2 at 1000 K? Express your answer in molarity to three significant figures. Part C What is the equilibrium concentration of COCl2 at 1000 K? Express your answer in molarity to three significant figures
For the following reaction, Kc = 255 at 1000 K. CO (g) + Cl2 (g) ⇌...
For the following reaction, Kc = 255 at 1000 K. CO (g) + Cl2 (g) ⇌ COCl2 (g) A reaction mixture initially contains a CO concentration of 0.1510 M and a Cl2 concentration of 0.179 M at 1000 K. You may want to reference ( pages 667 - 677) section 14.8 while completing this problem. Part A What is the equilibrium concentration of CO at 1000 K? Express your answer in molarity to three significant figures. [CO] = M SubmitMy...
For the following reaction, Kc = 255 at 1000 K. CO (g) + Cl2 (g) ⇌...
For the following reaction, Kc = 255 at 1000 K. CO (g) + Cl2 (g) ⇌ COCl2 (g) A reaction mixture initially contains a COconcentration of 0.1450 M and a Cl2concentration of 0.170 M at 1000 K. Part A What is the equilibrium concentration of CO at 1000 K? Express your answer in molarity to three significant figures. Part B What is the equilibrium concentration of Cl2 at 1000 K? Express your answer in molarity to three significant figures. Part...
For the following reaction, Kc = 255 at 1000 K . CO (g) + Cl2 (g)...
For the following reaction, Kc = 255 at 1000 K . CO (g) + Cl2 (g) ⇌ COCl2 (g) A reaction mixture initially contains a CO concentration of 0.1470 M and a Cl2 concentration of 0.175 M at 1000 K A:What is the equilibrium concentration of CO at 1000 K ? B:What is the equilibrium concentration of Cl2 at 1000 K ? C: What is the equilibrium concentration of COCl2 at 1000 K ?.
For the following reaction, Kc = 255 at 1000 K. CO (g) + Cl2 (g) ⇌...
For the following reaction, Kc = 255 at 1000 K. CO (g) + Cl2 (g) ⇌ COCl2 (g) A reaction mixture initially contains a CO concentration of 0.1470 M and a Cl2 concentration of 0.170 M at 1000 K. What is the equilibrium of (1)CO, (2) CL2, (3) COCL2; at 1000K?
For the following reaction, Kc = 255 at 1000 K . CO (g) + Cl2 (g)...
For the following reaction, Kc = 255 at 1000 K . CO (g) + Cl2 (g) ⇌ COCl2 (g) A reaction mixture initially contains a CO concentration of 0.1530 M and a Cl2 concentration of 0.172 M at 1000 K . What is the equilibrium concentration of CO at 1000 K ? What is the equilibrium concentration of Cl2 at 1000 K ? What is the equilibrium concentration of COCl2 at 1000 K ?
For the following reaction, Kc = 255 at 1000 K. CO (g) + Cl2 (g) ⇌...
For the following reaction, Kc = 255 at 1000 K. CO (g) + Cl2 (g) ⇌ COCl2 (g) A reaction mixture initially contains a COconcentration of 0.1470 M and a Cl2concentration of 0.173 M at 1000 K. A) What is the equilibrium concentration of CO at 1000 K? B) What is the equilibrium concentration of Cl2 at 1000 K? C)What is the equilibrium concentration of COCl2 at 1000 K?
For the following reaction, Kc = 255 at 1000 K. CO (g) + Cl2 (g) ⇌...
For the following reaction, Kc = 255 at 1000 K. CO (g) + Cl2 (g) ⇌ COCl2 (g) A reaction mixture initially contains a CO concentration of 0.1550 M and a Cl2 concentration of 0.178 M at 1000 K. Part A What is the equilibrium concentration of CO at 1000 K? Part B What is the equilibrium concentration of Cl2 at 1000 K? Part C What is the equilibrium concentration of COCl2 at 1000 K?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT