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Question

Ideal gas has a volume of 10 litres at 20oC and a pressure of 750 mm Hg. Find the expressions which is needed to determine the volume of the same amount of gas at STP?

A
10×750760×020L
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B
10×750760×293273L
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C
10×760750×020L
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D
10×760750×273293L
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E
10×750760×273293L
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Solution

The correct option is E 10×750760×273293L
Initial volume V1=10L
Final volume V2=?
Initial pressure P1=750mmHg
Final pressure P2=760mmHg
Initial temperature T1=20oC=293K
Final temperature T2=273K

P1V1T1=P2V2T2750×10293=760×V2273V2=10×750760×273293
Hence, the option (E) is the correct answer.

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