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Zero Order Reaction

A certain zer...

Question

A certain zero order reaction has $k = 0.025 M s e c^{- 1}$ for the disappearance of A. What will be the concentration of A after 15 seconds if initial concentration is 0.5 M?

A

0.5 M

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B

0.32 M

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C

0.125 M

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D

0.06 M

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Solution

The correct option is C $0.125 M$
$x = k t = 0.025 \times 15 = 0.375 M$
Remaining concentration of $A = 0.5 - 0.375$
$= 0.125 M$

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