Question

for the reaction 2HI - - > H2 +I2 what is the order of reaction

Answer 1

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Answer 2

For the reaction, 2HI - - > H2 +I2 what is the order of the reaction is 2.

• It is a 2nd order reaction.
• This reaction is an example of a combination reaction and the rate law for the given reaction is written as r = k|HI|².
• The rate law is defined as the multiplication of the concentration of reactants on which the reaction depends.
• Unit of rate constant for zero-order is s-1 while for a first-order reaction is (mol) L-1 s-1.
• The unit of rate constant for the second-order reaction is L mol-1 s-1.