i). A reaction is first order in A and 2nd order in B. a). Write the

1.	i). A reaction is first order in A and 2nd order in B. a). Write the differential law b). How is rate affected then consideration of B is tripled? c). How is rate effected when concentration of both A and B is doubled? (ii). in reference to Freundlich's adsorption Isotherm write the expression for adsorption of gases on solid in form of an equation. What is the nature of plot log\(\Big(\frac{x}{m}\Big)\) vs log C for the adsorption of solutes from solutions.
Answer» (i) It is given that a reaction is first order in A and second order in B. (a) The differential rate equation is as follows: Rate =k[A][B]² (b) On increasing the concentration of B three times, rate becomes 9 times. (d[B])² = 3² = 9 (c) When the concentrations of both A and B are doubled, rate becomes 8 times. d[A](d[B])² = 2×2² = 8 (ii) The Freundlich's adsorption Isotherm is written as x/m = Kp^1/n It is also written as Log x/m=log K+1/n log P where, x = mass of adsorbate m = mass of adsorbent p = Equilibrium pressure of adsorbate K = Constant For the adsorption of solutes from solution the nature of plot of log\(\Big(\frac{x}{m}\Big)\) vs log C is linear.

i). A reaction is first order in A and 2nd order in B. a). Write the differential law b). How is rate affected then consideration of B is tripled? c). How is rate effected when concentration of both A and B is doubled? (ii). in reference to Freundlich's adsorption Isotherm write the expression for adsorption of gases on solid in form of an equation. What is the nature of plot log\(\Big(\frac{x}{m}\Big)\) vs log C for the adsorption of solutes from solutions.

Answer»

(i) It is given that a reaction is first order in A and second order in B.

(a) The differential rate equation is as follows:

Rate =k[A][B]²

(b) On increasing the concentration of B three times, rate becomes 9 times.

(d[B])² = 3² = 9

d[A](d[B])² = 2×2² = 8

(ii) The Freundlich's adsorption Isotherm is written as

x/m = Kp^1/n It is also written as Log x/m=log K+1/n log P where,

x = mass of adsorbate

m = mass of adsorbent

p = Equilibrium pressure of adsorbate

K = Constant

For the adsorption of solutes from solution the nature of plot of log\(\Big(\frac{x}{m}\Big)\) vs log C is linear.