
Concept explainers
(a)
Interpretation:
The number moles of water are needed to react
Concept Introduction:
Mole ratio:
A mole ratio is a ratio between the numbers of moles of any two species involved in a
Example,
In the reaction
(a)

Answer to Problem 17PE
The number moles of water are needed to react
Explanation of Solution
Given,
The number of moles of oxygen is
The balanced reaction is,
In the mole ratio, the coefficients of the balanced equation are used. Therefore the mole ratio is
The number of moles can be calculated as,
The number moles of water are needed to react
(b)
Interpretation:
The number of grams of
Concept Introduction:
Refer to part (a).
(b)

Answer to Problem 17PE
The number of grams of
Explanation of Solution
Given,
The number of moles of water is
The balanced reaction is,
In the mole ratio, the coefficients of the balanced equation are used. Therefore the mole ratio is
The number of moles can be calculated as,
Conversion of moles to grams:
The molar mass of
The number of grams of
(c)
Interpretation:
The number of moles of carbon dioxide are produced when
Concept Introduction:
Refer to part (a).
(c)

Answer to Problem 17PE
The number of moles of carbon dioxide is
Explanation of Solution
Given,
The molecular weight of hydrochloric acid is
The molecular weight of carbon dioxide is
The given mass of hydrochloric acid is
The balanced reaction is,
In the mole ratio, the coefficients of the balanced equation are used. Therefore the mole ratio is
The number of moles can be calculated as,
The number of moles of carbon dioxide is
(d)
Interpretation:
The number of grams of
Concept Introduction:
Refer to part (a).
(d)

Answer to Problem 17PE
The number of grams of
Explanation of Solution
Given,
The molecular weight of
The molecular weight of carbon dioxide is
The given mass of carbon di oxide is
The balanced reaction is,
In the mole ratio, the coefficients of the balanced equation are used. Therefore the mole ratio is
The number of grams can be calculated as,
The number of grams of
(e)
Interpretation:
The number of grams of
Concept Introduction:
Refer to part (a).
(e)

Answer to Problem 17PE
The number of grams of
Explanation of Solution
Given,
The molecular weight of
The molecular weight of
The given mass of
The mass in kilogram has to converted to gram,
The balanced reaction is,
In the mole ratio, the coefficients of the balanced equation are used. Therefore the mole ratio is
The number of grams can be calculated as,
The number of grams of
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Chapter 9 Solutions
EBK FOUNDATIONS OF COLLEGE CHEMISTRY
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