
Concept explainers
(a)
Interpretation:
The limiting reactant and the number of moles aluminum sulfate produced have to be given.
Concept Introduction:
The limiting reactant of the reaction is the reactant that is completely used during the reaction. Using the mole ratio and starting amounts of the reactants limiting reactant can be determined.
Example:
Consider a reaction starts with
(a)

Explanation of Solution
Given,
The mass of
The mass of
The molecular weight of
The molecular weight of
The molecular weight of
The given reaction is,
The limiting reactant can be given by finding the mass of the product.
The moles of
The moles of
The moles of
The moles of
Since
(b)
Interpretation:
The grams of aluminum sulfate produced and the excess reactant has to be given.
(b)

Explanation of Solution
Given,
The mass of
The mass of
The molecular weight of
The molecular weight of
The molecular weight of
The given reaction is,
The excess reactant can be given by finding the mass of the product.
The mass of
The mass of
The mass of
The mass of
Since
(c)
Interpretation:
The number of moles of substance present in the container after the completion of reaction and the substance that will be present in the container has to be given.
(c)

Explanation of Solution
Given,
The number of moles of
The number of moles of
The given reaction is,
The moles of
The number of moles of unreacted
When the reaction is completed
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Chapter 9 Solutions
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