Question

At STP, 16 mL of $O_2$ diffused through a porous partition in t seconds. What volume of $C{O}_2$ will diffuse in the same time and under the same conditions?

• A. 13.65 mL
• B. 10.5 mL
• C. 20.2 mL
• D. 224.8 mL

Answer 1

The correct option is A 13.65 mL

By using Graham's Law, we have $\frac{R_1}{R_2}=\sqrt{\frac{M_2}{M_1}}$

$\frac{\frac{V_1}{t}}{\frac{V_2}{t}}=\sqrt{\frac{M_2}{M_1}}$

$\frac{16}{V_2}=\sqrt{\frac{44.01}{31.998}}$

$V_2=13.65ml$