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iven the equation 3 A + B → C + D . 114 moles of A is reacted with 2 moles of B. which of the following is true? l type='a'> The limiting reactant is the one with the higher molar mass. i>A is the limiting reactant because you need 6 moles of A and have 4 moles. i>B is the limiting reactant because you have fewer moles of B than moles of A. i>B is the limiting reactant because three A molecules react with every one B molecule. i>Neither reactant is limiting. r choices you did not pick, explain what you feel is wrong with them, and justify the choice you did pick.

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Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781337399425

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BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781337399425
Chapter 9, Problem 8ALQ
Textbook Problem
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iven the equation 3 A + B C + D . 114 moles of A is reacted with 2 moles of B. which of the following is true?

l type='a'>

  • The limiting reactant is the one with the higher molar mass.
  • i>A is the limiting reactant because you need 6 moles of A and have 4 moles.

    i>B is the limiting reactant because you have fewer moles of B than moles of A.

    i>B is the limiting reactant because three A molecules react with every one B molecule.

    i>Neither reactant is limiting.

    r choices you did not pick, explain what you feel is wrong with them, and justify the choice you did pick.

    Interpretation Introduction

    Interpretation:

    For the given equation, if 4 moles of A is reacted with 2 moles of B, then the correct statement is to be predicted. The reason behind the incorrect statements is to be stated.

    Concept Introduction:

    Limiting reagent is the reactant in the chemical reaction which is completely consumed. The amount of product and the excess reactant left in a reaction is determined on the basis of limiting reagent only.

    Explanation of Solution

    Reason for true statements: Possibility 1 is correct as in possibility 2 there are negative numbers of moles of A which is not possible.

    The mole ratio for A to C or D is 3:1, that is for three moles of A one mole of both C and D are formed. The mole ratio for B to C or D is 1:1, that is for one mole of B one mole of both C and D are formed.

    There are two possibilities for the limiting reagent in the given reaction.

    Possibility 1

    3A+BC+DBefore     4     2      0     0Change 41.34+1.34+1.34After        0         0.66      1.341.34

    In this case, A is considered as limiting reagent

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