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Ways to Define Concentration

For a first-o...

Question

For a first-order reaction, the concentration changes from $0.8 M$ to $0.4 M$ in $15$ mins. The time taken for the concentration to change from $0.1 M$ to $0.025 M$ is:

30

mins.

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15

mins.

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7.5

mins.

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60

mins.

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Solution

The correct option is A $30$ mins.

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0.6 M

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0.1 M

0.025 M

(A) follows first order reaction, (A) $\to$ product.

The concentration of A changes from 0.1 to 0.025 M in 40 min.

Find the rate of reaction of A when the concentration of A is 0.01 M.

\to

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