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Selina Solutions Class 9 Chemistry Solutions for Exercise Number Problems in Chapter 7 - Chapter 7 Study Of Gas Laws

Question 9 Number Problems

A gas at 240 K is heated to l27°C. Find the Percentage change in the volume of the gas (pressure remaining constant).

Answer:

Let volume = 100 ml

T = 240 K

Volume increased = x ml

New volume = 100 + x ml

T1 = 400 K

Using the gas equation

PV = P1V1

T T1

P x 100/240

P x (100 + x)/400

1000 = 6( 100 + x)/400

1000= 600 + 6x

6x = 400

X = 400/6

= 66.6

Percentage increased = 66.6 %

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