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Suppose that a 100 mL sample of ideal gas is held in a piston-cylinder apparatus. Its volume could be increased to 200 mL by :

a. increasing the temperature from 25oC to 50oC at constant pressure.

b. increasing the pressure from 1.00 atm to 2.00 atm at constant temperature.

c. reducing the temperature from 400K to 200 K

d. reducing the pressure from 760 torr to 600 torr while increasing the temperature from 25oC to 100oC

e. reducing the pressure from 608 torr to 0.40 atm at constant temperature.

2 Answers

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According to Boyle's Law, reducing the pressure would cause the volume to increase. Therefore, the correct option is

e. reducing the pressure from 608 torr to 0.40 atm at constant temperature.

How to determine which option would allow the volume of the ideal gas to increase from 100 mL to 200 mL

To determine which option would allow the volume of the ideal gas to increase from 100 mL to 200 mL, consider the gas laws and their relationships between pressure, temperature, and volume.

According to Boyle's Law, the volume of a gas is inversely proportional to its pressure when temperature is held constant. Mathematically, it can be expressed as:

P₁V₁ = P₂V₂

where P₁ and V₁ are the initial pressure and volume, and P₂ and V₂ are the final pressure and volume.

Let's analyze the given options:

a. increasing the temperature from 25°C to 50°C at constant pressure.

This option does not involve any changes in volume or pressure. Therefore, it is not the correct choice.

b. increasing the pressure from 1.00 atm to 2.00 atm at constant temperature.

According to Boyle's Law, increasing the pressure would cause the volume to decrease, not increase. Therefore, it is not the correct choice.

c. reducing the temperature from 400 K to 200 K.

This option does not involve any changes in volume or pressure. Therefore, it is not the correct choice.

d. reducing the pressure from 760 torr to 600 torr while increasing the temperature from 25°C to 100°C.

This option involves a decrease in pressure and an increase in temperature. To determine if the volume would increase, we need to consider the combined gas law, which incorporates Boyle's Law, Charles's Law, and Gay-Lussac's Law. However, without knowing the initial and final temperatures, we cannot determine if the volume would increase or decrease. Therefore, this option is not the correct choice.

e. reducing the pressure from 608 torr to 0.40 atm at constant temperature.

According to Boyle's Law, reducing the pressure would cause the volume to increase. Therefore, this option is the correct choice.

In conclusion, the correct option is:

e. reducing the pressure from 608 torr to 0.40 atm at constant temperature.

User Jothi Kannan
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3 votes

Answer:

a. increasing the temperature from 25⁰C to 50⁰C at constant pressure.

Step-by-step explanation:

according to Charles Law

When the pressure on a sample of a dry gas is held constant, the Kelvin temperature and the volume will be directly related.

so according to equation

V∝T under constant pressure.

so increasing temperature will increase volume and vice versa.

User Rajdeep
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5.0k points