Consider the reaction:CO(g) + 2H2(g) ? CH3OH(g)A reaction

Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo Tro

Problem 122P Chapter 11

Introductory Chemistry | 5th Edition

  • 2901 Step-by-step solutions solved by professors and subject experts
  • Get 24/7 help from StudySoup virtual teaching assistants
Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo Tro

Introductory Chemistry | 5th Edition

4 5 0 329 Reviews
18
1
Problem 122P

PROBLEM 122P

Consider the reaction:

CO(g) + 2H2(g) → CH3OH(g)

A reaction flask initially contains 112 torr of CO and 282 torr of H2. The reaction is allowed to proceed until the pressure stops changing, at which point the total pressure is 196 torr. Determine the percent yield for the reaction. Assume a constant temperature and that no other reactions occur other than the one indicated.

Step-by-Step Solution:

Solution 122

Here, we are going to determine the percent yield for the given reaction.

Step 1:

The given reaction is:

                                CO(g) + 2H2(g) → CH3OH(g)

From the above equation, it is clear that 1 mole of CO requires 2 moles of H2 for complete reaction.

Now, at constant temperature and volume, the pressure(p) of a gas is directly proportional to the number of moles(n).

Thus,                        

                                p ∝ n

Now, if p1, n1 are the pressure and number of moles of a gas and p2, n2 are the volume and number of moles of another gas , then,

                                        p1 = kn1 

                                        p2 = kn2

Combining the two equations, we get, p1 / n1 = p2 / n2        -----(1)

Step 2:

Let, p1, n1 are the pressure and number of moles of CO and p2, n2 are the volume and number of moles of H2 , then, pressure of H2 required to react with 112 torr pressure of CO is given by:

                                        p2 = (p1 x n2) / n1

                                            = (112 torr x 2 mol) / 1 mol

                                            = 224 torr

But we have H2 at 282 torr pressure, i.e., the pressure of H2 is in excess. Thus, CO acts as a limiting reactant.

Step 3 of 4

Chapter 11, Problem 122P is Solved
Step 4 of 4

Textbook: Introductory Chemistry
Edition: 5
Author: Nivaldo Tro
ISBN: 9780321910295

×
Log in to StudySoup
Get Full Access to Introductory Chemistry - 5 Edition - Chapter 11 - Problem 122p

Forgot password? Reset password here

Join StudySoup for FREE
Get Full Access to Introductory Chemistry - 5 Edition - Chapter 11 - Problem 122p
Join with Email
Already have an account? Login here
Reset your password

I don't want to reset my password

Need help? Contact support

Need an Account? Is not associated with an account
Sign up
We're here to help

Having trouble accessing your account? Let us help you, contact support at +1(510) 944-1054 or support@studysoup.com

Got it, thanks!
Password Reset Request Sent An email has been sent to the email address associated to your account. Follow the link in the email to reset your password. If you're having trouble finding our email please check your spam folder
Got it, thanks!
Already have an Account? Is already in use
Log in
Incorrect Password The password used to log in with this account is incorrect
Try Again

Forgot password? Reset it here