The rate equation for the reaction represented by as shown in the bellow figure, is given by – rx = K1 . Cx/(1 + K2 Cx). At high value of Cx (i.e.., K2Cx 1), the order of the reaction and the rate constant are respectively___________________?

Question

The rate equation for the reaction represented by as shown in the bellow figure, is given by – rx = K1 . Cx/(1 + K2 Cx). At high value of Cx (i.e.., K2Cx > > 1), the order of the reaction and the rate constant are respectively___________________?

Accepted Answer

Zero order & K1/K2. When K2Cx >> 1, the rate equation simplifies to -rx ≈ (K1/K2) * Cx / (K2Cx) = K1/(K2*C_x). This shows zero order and a rate constant of K1/K2.