Logo
Home Study Material Contact Search
AI Chat FREE
  1. sciences
  2. chemistry
  3. the table of diprotic acids below shows how the ac

The table of diprotic acids below shows how the acidity of the 1st proton is always...

Free

80.2K

Verified Solution

Question

Chemistry

The table of diprotic acids below shows how the acidity of the1st proton is always much higher than the acidity of the secondproton.Thus, the pH of the solution is dominated by the equilibriumfor the loss of the 1st proton.

CompoundKa1Ka2
H2CO34.3 X 10-75.6 X10-11
H2S8.9 X 10-81.0 X 10-19
H2Te2.3 X 10-31.6 X 10-11
H2SO31.7 X 10-26.4 X 10-8

What is the pH for a 1.12 M solution of Li2S?

Answer & Explanation Solved by verified expert
4.3 Ratings (754 Votes)

Concentration of Li2S = 1.12M

Li2S ------------------ 2 Li+ + S-2

S-2 + H2O ---------------- HS- + OH-

1.12                                      0        0

-x                                        +x          +x

1.12-x                                 +x          +x

Ka = 8.9x10^-8

Ka x Kb = Kw                     where Kw = 1.0x10^-14

Kb = Kw/Ka = 1.0x10^-14/8.9x10^-8 = 1.12 x10^-7

Kb= 1.12x10^-7

Kb = [HS-][OH-]/[S-2]

1.12x10^-7 = x*x/(1.12-x)

for solving the equation

x= 0.000354

[OH-] = 0.000354M

-log[OH-] = -log(0.000354)

POH= 3.45

PH+POH= 14

PH = 14-POH

PH= 14-3.45

PH= 10.55.
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: Zin AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Q

Given is the graph of f x Answer the following questions Make sure you justify...

Calculus
Q

St. Johns River Shipyard’s welding machine is 15 years old, fully depreciated, and has no salvage...

Finance
Q

Please read the short case and answer the 3 questions thank you While angel investors for online...

Operations Management
Q

What are forces felt by an ion in an electric field, an electron in a wire...

Physics
Q

A person of mass mis standing on one end of a plank of mass M...

Physics
Q

a The sign of the x coordinate is changed Complete list of Hdots

Geometry
Q

Find an equation of the form y ab csin a b X C y To...

Basic Math
Q

e graph of the derivative f of a function f is shown YA 0 2...

Calculus
Q

2 A set of test scores is normally distributed with a mean of 100 and...

Algebra
Q

GL901 - Based on Problem 9-1A LO C2, P1 The January...

Accounting
Q

Trombone Co (Trombone) operates a chain of hotels across the country. Trombone employs in excess...

Accounting
Q

Fundamentals of Futures and options Markets (8th edition). Chapter 9, problem 26FQ. I checked the...

Finance