Question

Which of the following would increase the pressure on a system?

A) Increase the Temperature

C) Decrease the volume

B) Pump in more gas

D) All of these​

Answer 1

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Q. Which of the following would increase the pressure on a system?

A) Increase the Temperature

C) Decrease the volume

B) Pump in more gas

D) All of these ✓

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Answer 2

Answer:

The pressure on a system will increase by increasing the temperature, decreasing the volume, pumping more number of gas.

The correct option will be (D).

Explanation:

• Amontons's law: The pressure of a given amount of gas is directly proportional to its absolute temperature, provided volume does not change i.e.

                P∝T

        So, by increasing temperature pressure will also increase.

• Boyles law: The volume of a given amount of gas is inversely proportional to its pressure when the temperature is held constant  i.e.  

                          P∝1/V

       So, by decreasing volume pressure increases.

• From the ideal gas equation we have,

                         PV=nRT

   R=universal gas constant

   n=number of moles of gas

by keeping temperature and volume constant then the pressure will only depend on the number of moles of gas i.e.

                P∝n

So, by pumping more gas the pressure will increase.

The correct option will be (D).