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Q.

The half life for the reaction  N2O5⇌2NO2+12O2 is, 24 hrs at 30° C . Starting with 10 g of  N2O5  how many grams N2O5  of  will remain after a period of 96 hours

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answer is 0.62.

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Detailed Solution

k=0.69324hr−1=2.30396log⁡10a−x or log⁡10a−x=1.2036 or 1−log⁡(a−x)=1.2036 or log⁡(a−x)=−0.2036=1.7964 or (a−x)= antilog 1.7964=0.6258gm.
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