1. Tardigrade
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  3. Chemistry
  4. Consider an elementary reaction, 2 A + B longrightarrow C + D; doubling the concentration of A (keeping the concentration of B constant) increases the rate by factor of .

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Q. Consider an elementary reaction,
$2 A + B \longrightarrow C + D$; doubling the concentration of $A$ (keeping the concentration of $B$ constant) increases the rate by factor of ___.

Chemical Kinetics

Solution:

For an elementary reaction, the coefficient of reactants is the order with respect to the reactant. Therefore, the rate law is
Rate $= k [ A ]^{2}[ B ]$
Hence, when concentration of $A$ is doubled, the rate increases by $4$ times.