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Question

10g of gas at STP occupies 5 litres. The temperature at which the volume becomes double for the same mass of gas at the same pressure is?

A
586K
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B
273C
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C
273C
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D
546C
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Solution

The correct option is C 273C
Given: At STP,
Temperature, T=0C=273 K
Pressure, P=1 atm
10gm(ω) of gas occupied 5 litres (V)
here,
The volume becomes double for the same
mass(w) of gas and same pressure.

Solution:by,PV=nRT

(VαT)
VV=TT

putting, V=2V,T=273K
& T=?(9nC)
2VV=T273
T=2×273 K
T=(2×273273)C
T=273(21)
(T=273C)
Correct option is (C)

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