Answer to Question #128045 in General Chemistry for Emily

Question #128045

the air in a cylinder with a piston has a volume of 280 ml and a pressure of 650 mmHg. to obtain a higher pressure inside the cylinder at a constant temperature and the amount of gas, should the volume of the gas in the cylinder change as


a. smaller volume

b. larger volume

c. remains the same


1
Expert's answer
2020-08-02T15:50:11-0400

pV = nRT (p - pressure, V - volume, n - amount of substance, T - temperature, R - universal gas constant)


By condition, n and T are constant; therefore nRT is constant also:

pV = constant.

So, if you want to obtain higher pressure, you should reduce volume.

Answer: a. smaller volume

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