Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
10th Edition
ISBN: 9781337399074
Author: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher: Cengage Learning
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Chapter 20, Problem 16PS

(a)

Interpretation Introduction

Interpretation:

The Ksp value for the given sulfide should be estimated.

Concept introduction:

  • KSP for a general reaction, AB(s)A(aq)++B(aq)- is,

    KSP=[A+][B-]

  • Molarity is one of the concentrations expressing terms and it is equal to the moles of solute divided by the liter of solution.

    Molarity(M)=MolesofsoluteLitersofsolution

  • Numberofmoles=MassingramsMolarmassofthesubstance
  • pH=-log[H3O+] it is used to know about the nature of the substance, whether it  is acidic, basic or neutral.

(b)

Interpretation Introduction

Interpretation:

The change in the solubility of Ag2S when pH decreases should be determined.

Concept introduction:

  • The Le Chateliers principle states that the position of equilibrium will move in such a way as to counteract the change in concentration, pressure, and temperature.

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