Chemistry
It is required to reduce the volume of a gas by 20% by compressing it at a constant pressure. To do so, the gas has to be cooled. If the gas attains a final temperature of 157°C, find the initial temperature of the gas ?
Gas Laws
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Answer
Initial conditions:
V1 = Initial volume of the gas = V
T1 = Initial temperature of the gas = ?
Final conditions
V2 (Final volume) = reduce by 20%
= V - of V
=
=
T2 = Final temperature of the gas = 157°C = 157 + 273 = 430 K
By Charles Law:
Substituting the values :
Therefore, final temperature of the gas = 537.5 K - 273 K = 264.5°C
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