1. Tardigrade
  2. Question
  3. Chemistry
  4. The rate of a gaseous reaction is given by the expression k [ A ][ B ]2 . If the volume of vessel is reduced to one half of the initial volume, the reaction rate as compared to original rate is

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Q. The rate of a gaseous reaction is given by the expression $k [ A ][ B ]^{2} .$ If the volume of vessel is reduced to one half of the initial volume, the reaction rate as compared to original rate is

KCETKCET 2021Chemical Kinetics

Solution:

$r = K [ A ][ B ]^{2}$
When volume is reduced to half, pressure increases by two times.
$r = k [2 A ]^{1}[2 B ]^{2}=2 \times 4=8$ times