1.

When sucrose is hydrolyzed it produced dextro-rotatory "glucose " and leavo-rotatory "fructose" whereas reactant itself is a dextro-rotatory compound. The above conversion process follows first order kinetics. Similarly an optically active compound A hydrolyzed as follows : A+ H_(2) O overset( H^(+))(rarr) 2B + C The observed rotation of compound A,B and C are 60^(@), 50^(@) and - 80^(@) per mole respectively. The angle of rotation after 40 minutes and after the completion of reaction were 26^(@) and 10^(@)respectively at 27^(@)C and activation energy for conversion is 27kJ mol^(-1) . The value of rate constant of above reaction at 27^(@)C is :

Answer»

`5.57 xx 10^(-3) mi N^(-1)`
`1.94xx 10^(-3) mi n^(-1)`
`1.37 xx 10^(-6) mi n^(-1)`
`6.13 xx 10^(-3) mi n^(-1)`

Answer :A


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