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Solution


Q.

For a chemical reaction A+B→ Product, the order is 1 with respect to A and B.

Rate [A] [B]
mol L−1s−1 mol L−1 mol L−1
0.10 20 0.5
0.40 x 0.5
0.80 40 y

What is the value of x and y                      [2023]
1 160 and 4  
2 80 and 4  
3 40 and 4  
4 80 and 2  

Ans.

(4)

For reaction A+B→product; rate=k[A]1[B]1

r=K[A]1[B]1

0.1=K(20)1(0.5)1                                ...(i)

0.40=K(x)1(0.5)1                             ...(ii)

0.80=K(40)1(y)1                              ...(iii)

From (i) and (ii):

0.40.1=k[x]1[0.5]1k[20]1[0.5]1;41=x20;x=80

From (i) and (iii):

0.80.1=k[40]1[y]1k[20]1[0.5]1;81=40×y20×0.5;y=2