Q.

Sucrose hydrolyses in acid solution into glucose and fructose following first order rate law with a half life of 3.33 h at 25c. After 9h , the fraction of sucrose remaining is ‘f’. The value of log101f is........... ×102(Rounded off to nearest integer)   

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answer is 81.

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Detailed Solution

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K=0.693t1/20.6933.330.208

K=2.303tlogR0R

0.208=2.3039log1f

log1f=0.813=81.3×102

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