
Concept explainers
(a)
Interpretation:
The partial pressure of oxygen needs to be determined.
Concept introduction:
Dalton’s law of partial pressure will be used, which can be calculated by; that, partial pressure of any substance is equal to the mole fraction of that substance multiplied by the total pressure. It can be given as-
(b)
Interpretation:
The number of moles of dry gas needs to be determined.
Concept introduction:
Ideal gas equation which holds the characteristic of ideal gas will be used, which can be given as-
Number of moles of a gas can be calculated by dividing mass of substance by mass of one mole or molar mass.
(c)
Interpretation:
The number of moles of wet gas needs to be determined.
Concept introduction:
Ideal gas will be used to calculate the no. of moles of wet gas. It is given as-
(d)
Interpretation:
The partial pressure of nitrogen in the flask needs to be determined.
Concept introduction:
To calculate the partial pressure mass and molar mass relation and
Mass and molar mass relation is given as-
Ideal gas equation for pressure is given as-
(e)
Interpretation:
The total pressure in the flask after addition of nitrogen needs to be determined.
Concept introduction:
Ideal gas equation for pressure is given as-
With the help of ideal gas equation pressure of both gases will be calculated which is added later to calculate total pressure.

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Chapter 5 Solutions
Chemistry: Principles and Reactions
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