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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

Aqueous solutions of iron(II) chloride and sodium sulfide react to form iron(II)sulfide and sodium chloride.

(a) Write the balanced equation for the reaction.

(b) If you combine 40. g each of Na2S and FeCl2, what is the limiting reactant?

(c) What mass of FeS is produced?

(d) What mass of Na2S or FeCl2 remains after the reaction?

(e) What mass of FeCl2 is required to react completely with 40. g of Na2S?

(a)

Interpretation Introduction

Interpretation:

Balanced equation for the given reaction has to 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

Aqueous solution of iron (II) chloride and sodium sulfide reacts to form iron (II) sulfide and sodium chloride.

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

Balanced equation for this reaction is,

  FeCl2(aq)+Na

(b)

Interpretation Introduction

Interpretation:

Limiting reagent of the reaction of 40.0 g of Na2S with 40.0 g of FeCl2 has to be determined.

Concept introduction:

Limiting reagent: limiting reagent is a reactant, which consumes completely in the chemical reaction. The quantity of the product depends on this limiting reagent, it can be determined with the help of balanced chemical equation for the reaction.

(c)

Interpretation Introduction

Interpretation:

Mass of Iron produced in the reaction of 40.0 g of Na2S with 40.0 g of FeCl2 has to be calculated.

(d)

Interpretation Introduction

Interpretation:

The mass of Na2S remains after reaction has to be calculated.

(e)

Interpretation Introduction

Interpretation:

The mass of FeCl2 required to react completely with 40.0gofNa2S

Concept Introduction:

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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