   # Consider the equation 3A + B ⟶ C + D. You react 4 moles of A with 2 moles of B. Which of the following is true? a. The limiting reactant is the one with the higher molar mass. b. A is the limiting reactant because you need 6 moles of A and have 4 moles. c. B is the limiting reactant because you have fewer moles of B than A. d. B is the limiting reactant because three A molecules react with each B molecule. e. Neither reactant is limiting. Justify your choice. For those you did not choose, explain why they are incorrect. ### Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243

#### Solutions

Chapter
Section ### Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243
Chapter 5, Problem 22ALQ
Textbook Problem
45 views

## Consider the equation 3A + B ⟶ C + D. You react 4 moles of A with 2 moles of B. Which of the following is true?a. The limiting reactant is the one with the higher molar mass.b. A is the limiting reactant because you need 6 moles of A and have 4 moles.c. B is the limiting reactant because you have fewer moles of B than A.d. B is the limiting reactant because three A molecules react with each B molecule.e. Neither reactant is limiting.Justify your choice. For those you did not choose, explain why they are incorrect.

(a)

Interpretation Introduction

Concept introduction: The component (substance) that gets completely consumed in a chemical reaction is known as the limiting reactant.

To determine: The authenticity of the statement, “The limiting reactant is the one with the higher molar mass”.

### Explanation of Solution

Given

The stated chemical equation is,

3A+BC+D

Three moles of A react with one mole of B.

One mole of A reacts with B =(13)mol

4mol of A react with B =(43)mol=1.33mol

Two moles of B are given. A part of B will be left unreacted. Hence, A is the limiting reactant in the given process

(b)

Interpretation Introduction

Concept introduction: The component (substance) that gets completely consumed in a chemical reaction is known as the limiting reactant.

To determine: The authenticity of the statement, “A is the limiting reactant because you need 6moles of A and have 4moles ”.

(c)

Interpretation Introduction

Concept introduction: The component (substance) that gets completely consumed in a chemical reaction is known as the limiting reactant.

To determine: The authenticity of the statement, “B is the limiting reactant because you have fewer moles of B than A”.

(d)

Interpretation Introduction

Concept introduction: The component (substance) that gets completely consumed in a chemical reaction is known as the limiting reactant.

To determine: The authenticity of the statement, “B is the limiting reactant because three A molecules react with each B molecule”.

(e)

Interpretation Introduction

Concept introduction: The component (substance) that gets completely consumed in a chemical reaction is known as the limiting reactant.

To determine: The authenticity of the statement, “Neither reactant is limiting”.

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