Concept explainers
Interpretation:
For the given equation, if
Concept Introduction:
Limiting reagent is the reactant in the
Answer to Problem 8ALQ
The true statement is “A is the limiting reactant because you need
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
There are two possibilities for the limiting reagent in the given reaction.
Possibility 1
In this case, A is considered as limiting reagent.
Possibility 2
In this case, B is considered as limiting reagent.
Possibility 1 is correct as in possibility 2 there are negative numbers of moles of A which is not possible.
Reason for false statements:
(a) The given statement is not true as the molar mass is not required for determining the limiting reactant.
(c) The given statement is not true because possibility 1 is correct. In possibility 2, there are negative numbers of moles of A which is not possible.
(d) The given statement is not true because possibility 1 is correct. In possibility 2, there are negative numbers of moles of A which is not possible.
(e) The given statement is not true because A acts as limiting reagent.
Explanation:
(a) It is not necessarily true that the limiting reactant is the one with higher molar mass. The limiting reactant is calculated on the basis of stoichiometry of reactants in a chemical reaction.
(c) The mole ratio for A to C or D is
There are two possibilities for the limiting reagent in the given reaction.
Possibility 1
In this case, A is considered as limiting reagent.
Possibility 2
In this case, B is considered as limiting reagent.
Possibility 1 is correct as in possibility 2 there are negative numbers of moles of A which is not possible.
(d) The mole ratio for A to C or D is
There are two possibilities for the limiting reagent in the given reaction.
Possibility 1
In this case, A is considered as limiting reagent.
Possibility 2
In this case, B is considered as limiting reagent.
Possibility 1 is correct as in possibility 2 there are negative numbers of moles of A which is not possible.
(e) The mole ratio for A to C or D is
There are two possibilities for the limiting reagent in the given reaction.
Possibility 1
In this case, A is considered as limiting reagent.
Possibility 2
In this case, B is considered as limiting reagent.
Possibility 1 is correct as in possibility 2 there are negative numbers of moles of A which is not possible.
Possibility 1 is correct as in possibility 2 there are negative numbers of moles of A which is not possible.
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Chapter 9 Solutions
Student Solutions Manual For Zumdahl/decoste's Introductory Chemistry: A Foundation, 8th Edition
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