Question

If 500 mL of a gas A at 1000 torr and 1000 mL of gas B at 800 torr are placed in a 2 L container,the final pressure will be

• A. 100 torr
• B. 650 torr
• C. 1800 torr C
• D. 2400 torr

Answer 1

Answer: (B)

650 torr

Answer 2

$P_{Total} = P_A + P_B$ = $\frac{500 \times 1000}{2000} + \frac{1000 \times 800}{2000}$ = 250 + 400 = 650 torr