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Zero Order Reaction

A certain zer...

Question

A certain zero order reaction has $k = 0.025 M s^{- 1}$ for the disappearance of A. What will be the concentration of A after 15 seconds if the initial concentration is 0.50 M ?

A

0.50

M

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B

0.375

M

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C

0.125

M

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D

0.060

M

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Solution

The correct option is B $0.125$ M
Its a Zero Order Reaction

$k = \frac{1}{t} [A_{0} - A]$

$0.025 = \frac{1}{15} [0.5 - A]$

$A = 0.125 M$

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