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Question

A gas is confined in a chamber of constant volume. When the chamber is immersed in a bath of melting ice, the pressure of the gas is 1000 torr. The final temperature, when the pressure in the manometer indicates an absolute pressure of 400 torr is:

A
109 K
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B
273 K
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C
373 K
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D
0 K
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Solution

The correct option is A 109 K
Melting point of ice =273 K

P1V1T1=P2V2T2 at constant V,

P1T1=P2T2

1000273=400T2 (at constant V)

T2=109.2 K

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