Logo
Home Study Material Contact Search
AI Chat FREE
  1. sciences
  2. chemistry
  3. ,,

,,

Free

90.2K

Verified Solution

Question

Chemistry

,,

Answer & Explanation Solved by verified expert
3.6 Ratings (352 Votes)

CH3NH3Br <====> CH3NH3+ + Br-

CH3NH3+ + H2O <===> CH3NH2 + H3O+

ICE table:

                        CH3NH3+              CH3NH2                   H3O+

initial                  0.12                       0                            0

change    -x +x    +x

equilibrium (0.12 - x) x                            x

pKb = -logkb = 3.35

pKa = 14 - 3.35 = 10.65

Ka = antilog(-pKa) = 2.23 x 10-11

Ka = x2/0.12     (0.12 >> x)

2.23 x 10-11 x 0.12 = x2

x = 1.63 x 10-6 = [H+]

pH = -log[H+]

pH = 5.78
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Biology
1.2K views

COLLAPSE You receive an specimen in the lab from a patient with an infected throat. Chronicle the...

Physics
1.2K views

A target in a shooting gallery consists of a vertical square wooden board, 0.230 m on...

Physics
1.2K views

On a frictionless horizontal air table, puck A (with mass 0.251 kg ) is moving toward...

General Management
1.2K views

Assume that the traffic to the web site of Smiley’s People, Inc., which sells customized T-shirts,...

Biology
1.2K views

Active transport involves the use of channels while passive transport does not.TrueFalse

Biology
1.2K views

Who made the following statement man is by nature a political animal O Socrates Plato...

Basic Math
1.2K views

A machine fills bottles with 64 ounces of liquid The quality control manager determines that...

Accounting
1.2K views

i would very much appreciate help with this question! Old...

Accounting
1.2K views

Discuss the Responsibilities of the Group Engagement Partner and the Group Engagement Team with audit...

Accounting
1.2K views

1. Briefly describe the requirement for dividend income to be eligible for "Qualified Dividends" designation...

Accounting
1.2K views

On 1 March 2007 DB Limited issued R560 000 15% debentures at R98. The debentures...

Accounting
1.2K views

QUESTION THREE a) Explain what you understand by the term conceptual framework for Financial...