1.

Which among the following reactions is an example of pseudo first order reaction?

Answer»

Inversion of cane sugar
Decomposition of `H_(2)O_(2)`
Conversion of cyclopropane to propene
Decomposition of `N_(2)O_(5)`

Solution :The hydrolysis of `C_(12)H_(22)O_(11)` by using dil HCl is PSEUDO first ORDER reaction.
`C_(12)H_(22)O_(11) + H_(2)O overset("dil" HCl) to C_(6)H_(12) O_(6) + C_(6)H_(12)O`
In thisconc. Of `H_(2)O` is taken as constant HENCE rate law expression is `R=k[C_(12) H_(22)O_(11)]` only.


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