300 litres of ammonia gas at 20^(@)C and 20 atmosphere pressure are allowed to expend in a space of 600litres capacity and to a pressure of one atmosphere. Calculate the drop in temperature.

300 litres of ammonia gas at 20^(@)C and 20 atmosphere pressure are al

1.	300 litres of ammonia gas at 20^(@)C and 20 atmosphere pressure are allowed to expend in a space of 600litres capacity and to a pressure of one atmosphere. Calculate the drop in temperature.
Answer» Solution :`(P_(1)V_(1))/(T_(1))=(P_(2)V_(2))/(T_(2)), i.e., (20 atmxx300 L)/(293 K)=(1 atmxx600 L)/(T_(2))"or" T_(2)=29.3 K` DROP intemperature =293-29.3=263.7 K