Question

If at 60°C and 80 cm of mercury pressure, a definite mass of a gas is compressed slowly, then the final pressure of the gas if the final volume is half of the initial volume ($\gamma$ = 3/2) is

• A. 120 cm of Hg
• B. 140 cm of Hg
• C. 160 cm of Hg
• D. 180 cm of Hg

Answer 1

Answer: (C)

160 cm of Hg

Answer 2

: Here,

If the gas is compressed slowly, then the process is isothermal.

In this case $P _ { 1 } V _ { 1 } = P _ { 2 } V _ { 2 }$