1.

A gas at 27^@ C temperature and 30 atmospheric pressure is allowed to expand to the atmospheric pressure. If the volume becomes 10 times its initial volume, the final temperature becomes .....

Answer»

`100^@C`
`173^@C`
`273^@C`
`-173^@C`

Solution :Here INITIAL temperature of gas
`(T_1)=27^@C` =300 K
Initial pressure `(P_1)`=30 atm
Initial volume `(V_2)`=10 V
Final pressure `(P_2)`=1 atm
Final volume `(V_2)`=10 V
According to general EQUATION of gas,
`(P_1V_1)/T_1=(P_2V_2)/T_2`
`therefore (30xxV)/300=(1xx10V)/T_2`
`therefore T_2`=100 K =`-173^@C`


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