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Rate Constant

At 373k the...

Question

At $373$ k the half-life period for the thermal decomposition of $N_{2} O_{5}$ is $4.6$ sec and is independent of the initial pressure of $N_{2} O_{5}$ . Calculate the specific rate constant of this temperature.

K = 0.1507 s^{- 1}

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K = 0.3014 s^{- 1}

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K = 0.1507 s^{- 2}

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K = 0.3014 s^{- 2}

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Solution

The correct option is C $K = 0.1507 s^{- 1}$
Decomposition of $N_{2} O_{5}$ is 1st Order Reaction.

So, $K = \frac{0.693}{t_{1 / 2}}$

$K = 0.1507 s^{- 1}$

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