Question

Q 26 There are two closed containers. A contain PCl5 at 25 degree celcius at 1 bar pressure. And Container B contains equilibrium mixture of gas obtained by partial decomposition of PCl5 at same temprature and pressure. Assuming that initially equal moles of PCl5 were taken into container the gases starts to effuse through a pinhole in the container. Which shows higher rate of effusion?Justify

Answer 1

$$\begin{gathered} AccordingtoGraham\text{'}slawofeffusion,rateofeffusionisinverselyproportionaltosquare \\ rootofmolecularmass. \\ \frac{r_1}{r_2}=\sqrt{\frac{M_2}{M_1}} \\ \frac{{r_{PCl}}_3}{r_{PC{l}_5}}=\sqrt{\frac{208.237}{137.332}}=1.23 \\ {r_{PCl}}_3=1.23{r_{PCl}}_5 \\ ThatmeanstherateofdiffusionofPC{l}_{3}is1.23timesfasterthanPC{l}_5 \end{gathered}$$