1.

A gas phase adsorption reaction is reaction controlling. The reaction follows Eley – Rideal mechanism, represented by A + B → R. If the product also adsorbs, which of the following rate expressions is true?

A. -rA = \(\frac{kP_A P_B}{1+ k_A P_A+ k_R P_R} \)
B. -rA = \(\frac{kP_A P_B}{(1+ k_A P_A+ k_R P_R)^2} \)
C. -rA = \(\frac{kP_A P_B}{1+ k_A P_A+ k_R P_R} \)
D. -rA = \(\frac{kP_A P_B P_R}{(1+ k_A P_A+ k_R P_R)^2} \)
Answer» B. -rA = \(\frac{kP_A P_B}{(1+ k_A P_A+ k_R P_R)^2} \)


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