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A flask contains a mixture of compounds ...

A flask contains a mixture of compounds A and B . Both compounds decompose by first - order kinetics . The half - lives for A and B are 300 s and 180 s , respectively . If the concentration of A and B are equal initially , the time required for the concentration of A to be four times that of B (in s ) is : ( Use In 2 : 0.693)

A

180

B

900

C

300

D

120

Text Solution

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The correct Answer is:
B
Properties of ionic solid
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