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First Order Reaction

If a first or...

Question

If a first order reaction is completed to the extent of 75% and 50% in time intervals, $t_{1}$ and $t_{2}$ , what is the ratio, $t_{1} : t_{2}$ ?

A

In 2

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B

\frac{I n (3 / 4)}{I n 2}

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C

2

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D

1/2

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Solution

The correct option is C 2
Its a 1st Order Reaction

$\frac{t_{1}}{t_{2}}$ = $\frac{l o g \frac{[100]}{[100 - 75]}}{l o g \frac{[100]}{[100 - 50]}}$

$\frac{t_{1}}{t_{2}}$ = $2$

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