Ans. Charles’ Law: Volume (V) of a gas in a closed vessel is directly proportional to absolute temperature (T) at constant pressure. V/T for a gas is a constant at specified pressure.
(V1/ T1) = (V2/ T2) - equation 1
Where, V1 = 1.77 x103 L at T1=120C = 285.15 K
V2 = 3.54 x103 L at T2
Putting the values in equation 1-
(1.77 x 103 L) / 285.15 K = (3.54 x 103 L) / T2
Or, T2 = (3.54 x 103 L) / [(1.77 x 103 L) / 285.15 K] = 570.3 K
Therefore, T2 = 570.3 K = 297.150C = 2970C
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