Given a sample of gas at 21°c, at what temperature in (°c) would it's volume be doubled? Assume that the pressure remains constant

1 Answer
anor277
Jun 23, 2018

So you have a gas enclosed in a piston, which is heated....?

Explanation:

Old Charles' Law holds that #VpropT#...and this law dates from the great age of steam railways...where steam compressed in valves ad cylinders..

#V propT#...and under conditions of different temperature given that #V=kT# #"(k is an unspecified constant..)"#...#T# is quoted as the #"absolute temperature"#...and we solve for #k#.

#V_1/T_1-=V_2/T_2#...

Now by specification....#V_2=2V_1#...

#T_2=V_2/V_1xxT_1=2xxunderbrace(294.15*K)_"absolute temperature"=??*K.#

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