Balance each redox reaction occurring in basic

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

Problem 69P Chapter 16

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 0 350 Reviews
30
0
Problem 69P

Balance each redox reaction occurring in basic solution.

(a) ClO− (aq) + Cr(OH)4− (aq) → CrO42− (aq) + Cl− (aq)

(b) MnO4− (aq) + Br− (aq) → MnO2(s) + BrO3− (aq)

Step-by-Step Solution:
Step 1 of 3

Solution: Here, we are going to balance the given redox reactions.

Step1:

ClO-(aq) + Cr(OH)4-(aq) → CrO42-(aq) + Cl-(aq)

The two half reactions are:

Oxidation: Cr(OH)4- (aq) → CrO42- (aq)         [ Cr oxidized from +3 to +6]

Reduction: ClO- (aq) → Cl- (aq)         [ Cl reduced from +1 to -1 ]

Step2:

To balance the O atoms in the reduction half reaction, we add one water molecule on the right:

ClO- (aq) → Cl- (aq) + H2O

To balance the H atoms, we add two H+ ions on the left:

ClO- (aq) + 2H+ → Cl- (aq) + H2O

As the reaction takes place in a basic solution, therefore, for two H+ ions, we add two OH– ions to both sides of the equation:

         ClO- (aq) + 2H+ + 2OH- → Cl- (aq) + H2O + 2OH-

Replacing the H+ and OH– ions with water, the resultant equation is:

  ClO- (aq) + 2H2O → Cl- (aq) + H2O + 2OH-

 ClO- (aq) + H2O → Cl- (aq) + 2OH-

Similarly, to balance the four hydrogen atoms in the oxidation half reaction, we add four H+ ions on the right:  

                                Cr(OH)4- (aq) + 4OH- → CrO42- (aq) + 4H+ + 4OH-

                                Cr(OH)4- (aq) + 4OH- → CrO42- (aq) + 4H2O

Step3:

In this step we balance the charges of the two half-reactions by using...

Step 2 of 3

Chapter 16, Problem 69P is Solved
Step 3 of 3

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

This full solution covers the following key subjects: MNO, balance, bro, clo, cro. This expansive textbook survival guide covers 19 chapters, and 2045 solutions. Introductory Chemistry was written by Patricia and is associated to the ISBN: 9780321910295. Since the solution to 69P from 16 chapter was answered, more than 254 students have viewed the full step-by-step answer. The full step-by-step solution to problem: 69P from chapter: 16 was answered by Patricia, our top Chemistry solution expert on 05/06/17, 06:45PM. This textbook survival guide was created for the textbook: Introductory Chemistry, edition: 5. The answer to “Balance each redox reaction occurring in basic solution.(a) ClO? (aq) + Cr(OH)4? (aq) ? CrO42? (aq) + Cl? (aq)(b) MnO4? (aq) + Br? (aq) ? MnO2(s) + BrO3? (aq)” is broken down into a number of easy to follow steps, and 29 words.

×
Log in to StudySoup
Get Full Access to Introductory Chemistry - 5 Edition - Chapter 16 - Problem 69p

Forgot password? Reset password here

Join StudySoup for FREE
Get Full Access to Introductory Chemistry - 5 Edition - Chapter 16 - Problem 69p
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