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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

Iodine is made by the following reaction

2 NaIO3(aq) + 5 NaHSO3(aq) → 3 NaHSO4(aq) + 2 Na2SO4(aq) + H2O(l) + I2(aq)

(a) Name the two reactants.

(b) If you wish to prepare 1.00 kg of I2, what masses of NaIO3 and NaHSO3 are required?

(c) What is the theoretical yield of I2 if you mixed 15.0 g of NaIO3 with 125 mL of 0.853 M NaHSO3?

(a)

Interpretation Introduction

Interpretation:

The reactants involved in the reaction should be named.

Explanation

Balanced chemical equation for the given reaction is,

  2 NaIO3(aq)+5 NaHSO3(aq)3 NaHSO4(aq)+2 Na2

(b)

Interpretation Introduction

Interpretation:

The masses of NaIO3 and NaHSO3 required to produce 1kgofI2 has to be calculated.

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.
  • 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).
  • Stoichiometric factor is a relationship between reactant and product which is obtained from the balanced chemical equation for a particular reaction.
  • 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:

The theoretical yield of I2 produced in the reaction with 15.0gofNaIO3 and 125mLof0.853M has to be determined.

Concept Introduction:

Theoretical yield is the maximum product yield that can be expected based on the masses of the reactants and the reaction stoichiometry.

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