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Answer: Write a molecular equation for the precipitation

Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro ISBN: 9780321910295 34

Solution for problem 68P Chapter 7

Introductory Chemistry | 5th Edition

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Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro

Introductory Chemistry | 5th Edition

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Problem 68P

PROBLEM 68P

Write a molecular equation for the precipitation reaction that occurs (if any) when each pair of solutions is mixed. If no reaction occurs, write NO REACTION.

(a) potassium chloride and lead(II) acetate

(b) lithium sulfate and strontium chloride

(c) potassium bromide and calcium sulfide

(d) chromium(III) nitrate and potassium phosphate

Step-by-Step Solution:

Solution 68P :

Step 1:

To write the molecular equation for the precipitation reaction, we determine the formulas for the possible products using the general double displacement equation.

AB  +  CD    → AD  +  CB  

When 2 solutions of soluble and insoluble salts are mixed, the reaction is occurred and forms precipitation. Whereas, 2 solution of soluble salts are mixed, there will be no reaction as the salts in the solution dissolves and only ions are remained.

Based on this concept, we write the reactions and in the reactions, the reactants are solutions hence it will be indicated using (aq) and the insoluble product will be indicated using (s) which indicates it is solid state and soluble product is indicated using (aq) indicating the product is in liquid state.

Step 2 of 2

Chapter 7, Problem 68P is Solved
Textbook: Introductory Chemistry
Edition: 5
Author: Nivaldo J Tro
ISBN: 9780321910295

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Answer: Write a molecular equation for the precipitation

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