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Question

Density of a gas is found to be 5.46 g/dm3 at 27 C at 2 bar pressure. What will be its density at STP?

A
3.0 g dm3
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B
5.0 g dm3
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C
6.0 g dm3
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D
10.82 g dm3
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Solution

The correct option is A 3.0 g dm3
As We Know,
P=nVRT=mV×RTM=dRTM,
Because mV=d (density)
or d=PMRT or dPT
d1d2=P1P2×T2T1 or d2=d1×P2×T1P1×T2
d2=5.46×1×3002×273=3.0 g dm3
Hence, correct option is (a).

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