Four moles of an ideal gas at a pressure of 4 atm and at a temperature of 70^(@)C expands is othermally to four times its initial volume : What is (i) the final temperature and (ii) the final volume ?

Four moles of an ideal gas at a pressure of 4 atm and at a temperature

1.	Four moles of an ideal gas at a pressure of 4 atm and at a temperature of 70^(@)C expands is othermally to four times its initial volume : What is (i) the final temperature and (ii) the final volume ?
Answer» Solution :INITIAL VOLUME `= V _(1)` Initial pressure `=P _(1) = 4 atm` INTIAL temperature `= T _(1) = 70 + 273 = 343 K` Final volume = ` V _(2) = 4V_(1)` The process is ISOTHERMAL. So the temperature remains constant Final pressure `P _(2) = ?` `P _(2) V _(2) = P _(1) V_(1)` `P _(2) = (P _(1) V _(1))/( V _(2)) = ( 4 xx V _(1))/( 4 V _(1)) = 1 ` atm