Logo
Home Study Material Contact Search
AI Chat FREE
  1. sciences
  2. chemistry
  3. what is the ph of a solution that is 1.3 m nh3? (

What is the pH of a solution that is 1.3 M NH3? ( Ka=5.70 x 10^-10...

Free

70.2K

Verified Solution

Question

Chemistry

What is the pH of a solution that is 1.3 M NH3? ( Ka=5.70 x10^-10 for NH4+).

Answer & Explanation Solved by verified expert
4.2 Ratings (739 Votes)

Since Ka*Kb = 10-14

Thus, Kb = 10-14/(5.7*10-10) = 1.75*10-5

The reaction taking place is :

                      NH3 + H2O ----> NH4+ + OH-

Initial                1.3                   0           0

Eqb                1.3-x                  x           x

Thus, Kb = [NH4+]*[OH-]/[NH3] = x*x/(1.3-x) = 1.75*10-5

Solving we get :

x = [OH] = 4.76*10-3 M

Thus, pOH = -log([OH-]) = 2.32

Thus, pH = 14- pOH = 11.68
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

Statistics
1.2K views

A C D 11 211 211 12 125 121 7 179 185 12 225 222 11 161 157 15 170 174 6 191 184 16 195 194 12 135 133 13 162 165 9 14 11 10 8 15 14 13 9 6 8 12 14 16 11 The mean of the distribution of potato sack weights is 80 lbs with a standard deviation...

Basic Math
1.2K views

Q: Suppose a new treatment for a certain disease is given to a sample of 200...

Basic Math
1.2K views

A group of 10 friends decides to head up to a cabin in the woods...

Calculus
1.2K views

A pair of dice is rolled. What is the probability of getting a sum of...

Algebra
1.2K views

Consider the transition matrix is equal to O 200 150 350 320 180 200 If...

Algebra
1.2K views

Choose the correct description of the set A 5 10 15 20 Choose the correct...

Accounting
1.2K views

57. Alfred E. Old and Beulah A. Crane, each age 42, married on...

Accounting
1.2K views

Find the correct filing status. John and Mary have been married 12 months Mary and...

Accounting
1.2K views

A1 and A3 & A4. account rec is 495,530 Omitted...

Accounting
1.2K views

please answer The following information is related...

Accounting
1.2K views

On September 14, Guess delivers the jeans to Nordstrom. (Answer from the standpoint of Guess...

Accounting
1.2K views

AUDITING ERP DATA BASES You are an independent auditor attending an engagement interview with the...