Question

The reaction L M is started with 10 g/L .After
30 and 90 minute, 5 g and 1.25 g/L are
respectively. The order of reaction is
(1) 0
(2) 2
(3) 1
(4) 3
​

Answer 1

Answer:

Reaction occurs as follows,

L ---> M

Initially L was 10 gram

In 30 minutes it decreases to 5 gram i.e.50%

In 60 minutes it decreases to 2.5 gram i.e.25%

In 90 minutes it decreases to 1.25 gram i.e.12.5%

We observe uniform decrease in reactant here, Hence this is a first order reaction

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