Question

# Distinguish between order and molecularity of a reaction.

Solution

## MolecularityOrder$$(1)$$ It is the number of reaction species undergoing simultaneous collision.$$(1)$$ It is the sum of powers of the concentration terms in the rate law expression.$$(2)$$ It is a theoretical concept.$$(2)$$ It is experimentally determined.$$(3)$$ It has integral values only.$$(3)$$ It can have fractional values also.$$(4)$$ It cannot be zero.$$(4)$$ It can be zero.$$(5)$$ It provides no information on the reaction mechanism.$$(5)$$ The slowest step in the reaction can be judged by the order of the reaction & this gives further information about the mechanism.Chemistry

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