# Consider a sample of a gas in a cylinder with a movable piston. Show diagrammatically the changes in the position of the piston, if the temperature is decreased from 400 K to 300 K - Chemistry

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Consider a sample of a gas in a cylinder with a movable piston.

Show diagrammatically the changes in the position of the piston, if the temperature is decreased from 400 K to 300 K, and pressure is decreased from 4 bar to 3 bar.

#### Solution

According to combined gas law,

("P"_1"V"_1)/("T"_1)=("P"_2"V"_2)/("T"_2)

∴ (4xx1)/400=(3xx"V"_2)/300 .....[Assuming V1 = 1 L]

∴ V2 = 1 L

Thus, the volume of the gas remains the same.

Hence, there will be no change in the position of the piston.

Concept: The Gas Laws
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#### APPEARS IN

Balbharati Chemistry 11th Standard Maharashtra State Board
Chapter 10 States of Matter
Exercises | Q 3. (B)(c) | Page 158