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K for a zero order reaction is 2 xx 10^(...

K for a zero order reaction is `2 xx 10^(-2) "mol L"^(-1) "sec"^(-1)`. If the concentration of the reactant after 25 sec is 0.5 M, the initial concentration must have been.

A

0.5 M

B

1.25 M

C

12.5 M

D

1.0 M

Text Solution

Verified by Experts

The correct Answer is:
D
As per unit, zero order reaction
`C_O- C_t = KT`
`C_O - 0.5 = 2 xx 10^(-2) xx 25`
`C_O = 1.0` M
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