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Question

 A gas occupies 3 litres at 0C . What volume will it occupy at - 20C pressure remaining constant?
 


Solution

V is directly proportional to T
0 degree celsius = 273k=T1
-20 degree celsius=253k=T2

Charles Gas law: 

V1T1=V2T2
V1T1×T2=V2
3L290K×253K=V2
V2=2.78 litres


Chemistry
Concise Chemistry
Standard IX

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