*SHOW COMPLETE SOLUTION*A solution contains 0.02 mol Cd2+, 0.02 mol Zn2+, and 1 M HCI is saturated with 0.1 MH2S.Ка, Н,S1.3 x 10-20Ksp, Zns1х 10-20Ksp, CdS3.6 x 10-29(a) How much [S2- ] is present?ANS: [S2-] = 1.3 x 10^-21 M(b) Will ZnS precipitate out?ANS: Qsp = 2.6 x 10^-23Qsp < Ksp No precipitate.(c) Will CdS precipitate out?ANS: Qsp = 2.6 x 10^-23Qsp > Ksp CdS will ppt out.

It is given as, H2S⇌2H+ +S2- The H+ concentration is given as, H+=1+0.1×2H+=1+0.2H+=1.2M

Answered: 5 -20 1.3 x 10 1 x 10-20 IS 3.6 x 10-29

Science

Chemistry

5 -20 1.3 x 10 1 x 10-20 IS 3.6 x 10-29

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.

Question

*SHOW COMPLETE SOLUTION*
A solution contains 0.02 mol Cd2+, 0.02 mol Zn2+, and 1 M HCI is saturated with 0.1 M
H2S.
Ка, Н,S
1.3 x 10-20
Ksp, Zns
1х 10-20
Ksp, CdS
3.6 x 10-29
(a) How much [S2- ] is present?
ANS: [S2-] = 1.3 x 10^-21 M
(b) Will ZnS precipitate out?
ANS: Qsp = 2.6 x 10^-23
Qsp < Ksp No precipitate.
(c) Will CdS precipitate out?
ANS: Qsp = 2.6 x 10^-23
Qsp > Ksp CdS will ppt out.

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