Logo
Home Study Material Contact Search
AI Chat FREE
  1. sciences
  2. chemistry
  3. ± common-ion effect on solubility for lead thio

± Common-Ion Effect on Solubility for Lead Thiocyanate Lead thiocyanate, Pb(SCN ) 2 Common-Ion Effect Consider...

Free

60.1K

Verified Solution

Question

Chemistry

± Common-Ion Effect on Solubility for Lead Thiocyanate Leadthiocyanate, Pb(SCN ) 2 Common-Ion Effect Consider the dissolutionof AB(s) : AB(s)⇌A+(aq)+ B − (aq) Le Châtelier's principle tells usthat an increase in either [ A + ] or [ B − ] will shift thisequilibrium to the left, reducing the solubility of AB . In otherwords, AB is more soluble in pure water than in a solution thatalready contains A + or B − ions. This is an example of thecommon-ion effect. Part B Calculate the molar solubility of leadthiocyanate in 1.00 M KSCN . Express your answer with theappropriate units. , has a K sp value of 2.00× 10 −5 .

Part A Calculate the molar solubility of lead thiocyanate inpure water. The molar solubility is the maximum amount of leadthiocyanate the solution can hold. Express your answer with theappropriate units.

Answer & Explanation Solved by verified expert
3.9 Ratings (660 Votes)

PbSCN (s) < ----------> Pb2+ (aq.) + 2 SCN- (aq.)

S                                S                2S    Mol/L of solubility

Ksp = [Pb2+][SCN-]2

In pure water,

2.00 * 10-5 = (S)(2S)2

2.00 * 10-5 = 4S3

S = (2.00 *10-5 / 4 ) 1/3

S = Solubility of lead thiocyanate in pure water = 2.236 * 10-3 M

In KSCN solution,

KSCN -------------> K+ (aq.) + SCN- (aq.)

1.00                    1.00         1.00M

[SCN-] = 1.00 M Since KSCN is completely soluble assume the [SCN-] is approximately equals to conc. of SCN- coming from KSCN.

therefore,

Ksp = [Pb2+]SCN-]2

2.00 * 10-5 = (S)(1.00)2

S = solubility of lead thiocyanate in 1.00 M KSCN solution = 2.00 * 10-5 M
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

Basic Math
1.2K views

Unit 1 Introductory Lesson 1 Variables and Expressions Example 4 Complete the table below Word...

Psychology
1.2K views

How do your biological , physiological, and societal system influence the way you make decisions in...

Physics
1.2K views

Two long thin parallel wires 13.0 cm apart carry 25-A currents in the same direction. Part A Determine the...

Advance Math
1.2K views

Provide the definition of an Empirical Model, and provide two examples.

General Management
1.2K views

please I want you to answer this question and most importantly, the answer is not already...

Advance Math
1.2K views

Consider the nonlinear equation f(x) = x3? 2x2 ? x + 2 = 0. (a) Verify that...

Biology
1.2K views

As a result of diffusion, the concentration of many types of substancesalways remains greater inside...

Biology
1.2K views

Which of the following is the multitasking operating system I Mac OS II UNIX III...

Basic Math
1.2K views

8] Ophelia Payne is walking to her office building which she knows is 150 ft...

Basic Math
1.2K views

Graph g(x) = -x/2-5.Use the graphing tool to graph the function......

Calculus
1.2K views

Solve the following compound inequality 7x 8 2x 7 7x 3 Give your answer in...

Accounting
1.2K views

Toxaway Company is a merchandiser with two divisions-Commercial and Residential. The company's accounting...