Concept explainers
(a)
Interpretation:
The change in the pressure
Concept introduction:
The volume of the gas shows inverse relation with the pressure at a constant temperature according to a Boyle’s law. Mathematically, it is expressed, as shown below.
Here,
Answer to Problem 12E
The pressure increases with decrease in volume from
Explanation of Solution
According to the equation of Boyle’s law if volume is increased for a particular or constant temperature then the pressure of the gas will be decreased to keep the
Where,
•
•
•
•
•
The given values of the initial volume
Substitute the values of
Therefore, increased pressure is
The pressure increases with decrease in volume from
(b)
Interpretation:
The change in the pressure
Concept introduction:
Gay Lussac’s law one of the
Answer to Problem 12E
The pressure of a gas decreases when its temperature decreases from
Explanation of Solution
The relation given by Gay Lussac’s for the gaseous molecule is stated below.
Where,
•
•
•
•
•
Ratio of pressure and temperature is constant. Pressure will be increased with the increase in value of temperature to keep the ratio
Conversion of initial temperature
Conversion of final temperature
Substitute the value of
Therefore, the decreased pressure is
The pressure of a gas decreases when its temperature decreases from
(c)
Interpretation:
The change in the pressure
Concept introduction:
Answer to Problem 12E
The pressure of a gas decreases when its moles
Explanation of Solution
The relation given by all the variables of a gas is stated as below.
According to the relation given above pressure is directly proportional to the number of moles. Pressure will be decreased with the decrease in number of moles to maintain the gas law when all other variables are kept constant.
Gas law is written below.
Where,
•
•
•
•
•
•
•
The number of moles,
The number of moles,
Substitute the given values of
Therefore, the decrease in pressure is
The pressure of a gas decreases when its moles
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Chapter 10 Solutions
Introductory Chemistry: Concepts and Critical Thinking (8th Edition)
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