   Chapter 4, Problem 6PS

Chapter
Section
Textbook Problem

The formation of water-Insoluble silver chloride is useful in the analysis of chloride-containing substances. Consider the following unbalanced equation:BaCl2(aq) + AgNO3(aq) → AgCI(s) + Ba(NO3)2(aq) (a) Write the balanced equation. (b) What mass of AgNO3, in grams, is required for complete reaction with 0.156 g of BaCI2? What mass of AgCI is produced?

(a)

Interpretation Introduction

Interpretation:

The balanced chemical equation for the given reaction should be written.

Concept introduction:

For chemical reaction balanced chemical reaction equation written in accordance with the Law of conservation of mass.

Law of conservation of mass states that for a reaction total mass of the reactant and product must be equal.

Explanation

The unbalanced chemical equation for the given reaction is,

BaCl2(aq)+AgNO3(aq)AgCl(s)+Ba(NO3)2(aq)

For chemical reaction balanced chemical reaction equation written in accordance with the Law of conservation of mass.

Law of conservation of mass states that for a reaction total mass of the reactant and product must be equal

(b)

Interpretation Introduction

Interpretation:

The mass of AgNO3 in gram is required to react with 0.156g of BaCl2 should be calculated.  Mass of AgCl produced in the reaction has to be determined.

Concept introduction:

Numberofmole=GivenmassofthesubstanceMolarmass

• The molar mass of an element or compound is the mass in grams of 1 mole of that substance, and it is expressed in the unit of grams per mol (g/mol).
• For chemical reaction balanced chemical reaction equation written in accordance with the Law of conservation of mass.
• Law of conservation of mass states that for a reaction total mass of the reactant and product must be equal.
• Stoichiometric factor is a relationship between reactant and product which is obtained from the balanced chemical equation for a particular reaction.

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