022713 The initial reaction rates of four mixtures of Ha and

02/27/13 The initial reaction rates of four mixtures of Ha and NO were measured at 1500%C with the folla Experiment Hab (M INO(Mial Rate (Ms) 0212 021202720079 0.424 0848 013600395 2 3 1 0.544 062 0.54425 6th attempt Part 1 (1 point) Choose the correct rate aw for the reagtion at 15OCe Choose one: rate # k[H,I rate 1 I [NO] rate = k[H..\'[NO] B. o C. * D, Part 2 (1 point) Determine the rate conatant fo 00R0 5th attempt | 03:28 >

Solution

Ans Part 1 : D) rate = k[H2]²[NO]

When the concentration of NO is kept constant and that of H2 is doubled , the rate of reaction increases by a factor of 4. So the order of reaction is 2 with respect to H2.

When the concentration of H2 is kept constant and that of NO is doubled , then the rate of reaction also increases by a factor of 2.

So the rate of reaction is given as :

rate = k[H2]²[NO]

Ans Part 2 :

Rate = k[H2]²[NO]

0.0395 = k (0.212)²(0.136)

k = 6.46 M^-2s^-1