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: Flex AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Q

Graph shows a hypothetical speed distribution for a sample of N gas dN dN particle...

Physics
Q

The prices of stocks at any point should reflect, fully, all available information. We live in...

Finance
Q

Helper T cells can interact with macrophages which leads to the release of chemical communicators...

Biology
Q

19 24 A parallel plate capacitor is immersed in a liquid dielectric having dielectric constant...

Physics
Q

Fir 1 8 x 10 5 N s m and its density is 1 2...

Physics
Q

9 A particle moves along a line so that its velocity at time t is...

Calculus
Q

Question 1 of 9 View Policies Current Attempt in Progress Match each term or phrase...

Accounting
Q

Complete the journal entries:

Accounting
Q

Dawn is the sole shareholder of Thrush Corporation, a calendar year C corporation. In the...

Accounting
Q

Serial Problem Business Solutions LO P1, P2, P3, P4 [The following information applies to the...

Accounting
Q

El Royal Canadian Lodge en Banff, Alberta, ha acumulado registros de los costos elctricos totales...

Accounting
Q

Scott Co.'s property, plant, and equipment and accumulated depreciation and amortization balances at December 31,...

Finance