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Question
Calculate the following:
A gas ‘X’ at -33°C is heated to 127°C at constant pressure. Calculate the percentage increase in the volume of the gas.
Solution
Let V1 = x cc
V2 = ?
T1 = - 33 + 273 = 240 K
T2 = 127 + 273 = 400 K
At constant pressure `"V"_1/"T"_1 = "V"_2/"T"_2`
`therefore "V"_2 = ("V"_1"T"_2)/"T"_1 = ("x" xx 400)/240 = "5x"/3` cc
Increase in volume = `"5x"/3 - "x" = 2/3 "x"`cc
∴ % increase = `"2x"/"3x" xx 100 = 200/3 = 66 2/3%`
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