Question

5 $L$ of methane gas at 2 $atm$ pressure is compressed to 1.6 $L$ at constant temperature. Calculate the final pressure.

• A. 0.64 $atm$
• B. 6.25 $atm$
• C. 4 $atm$
• D. 16 $atm$

Answer 1

Answer: (B)

6.25 $atm$

Applying Boyle's law; $P_1{V}_1=P_2{V}_2$
$5\times 2=1.6\times P_2$
Therefore final pressure; $P_2$ = $\frac{10}{1.6}=6.25atm$