Verified Solution • 2025–26 Session moderate

QAIPMT-2005-Ch-2512: NEET 2005 Chemistry - Class 12 AIPMT-2005-Ch-2512 Solution: The rate of reaction between two reactants A and B decreases by …

The rate of reaction between two reactants A and B decreases by a factor of 4 if the concentration of reactant B is doubled. The order of this reaction with respect to reactant B is

Multiple Choice Options

  • A 2
  • B −2-2
  • C 1
  • D −1-1

Step-by-Step Verified Solution

A + B _ Product Rate _ [A] x [B] y .......(1) The rate of the reaction decreases by a factor of 4 if the concentration of reactant B is doubled. r 4 _ [A] x [2B] y ......(2) From equation (1) and (2), we get ( 1 2 ) y = 4 _ y = -2 _ Order of this reaction with respect to reactant B is -2.

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