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Q.

in the presence of acid, the initial concentration of cane- sugar was reduced from 0.2 M to 0.1 M in 5 hours and to 0.05 M in 10 hours. The reaction must be of?

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a

Zero order 

b

First order 

c

Second order 

d

Fractional order

answer is C.

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Detailed Solution

detailed_solution_thumbnail

initial concentration a=0.2 M

Given a=0.2 M→0.1 M5 hrt1/2=5 hr→0.05 M5 hrt1/2=5 hr.

Which indicates that the reaction must be of first order.

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