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Question

An inflated rubber balloon contains one mole of an ideal gas, has a pressure p, volume V and temperature T. If the temperature rises to 1.1 T, and the volume is increase to 1.05 V, the final pressure will be

A
between p and 1.1 p.
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B
1.1 p
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C
p
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D
less than p
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Solution

The correct option is A between p and 1.1 p.
Formula Used: PV=nRT

Let P1=p,V2=1.05 V,V1=V,
T2=1.1 T,T1=T

From ideal gas equation, PV=nRT.

Here n is the numbers of moles,

So, n=P1V1RT1=P2V2RT2

Or P1V1T1=P2V2T2

P2=P1V1V2T2T1

Substituting the values, we get

P2=p×V×1.1 T1.05 V×T

=1.11.05p

=1.05 p

i.e. between p and 1.1 p

Final Answer: (d).

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