Q.

What will be the order of reaction and rate constant for a chemical change having logt50% versus log concentration of (a) curves as: 

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a

3, 1

b

1, 1

c

2, 2

d

0, 1/2

answer is A.

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Detailed Solution

by graph we can say logt1/2=loga ; t1/2=a   .....(1)

t1/2a then zero order Rxn   k×t1/2=a2  ......(2)

then k=12

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