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3. Chemical kinetics — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistry3. Chemical kinetics1 Mark
MCQ
If doubling the concentration of a reactant $ 'A'$  increases the rate $4$ times and tripling the concentration of $'A' $ increases the rate $9$  times, the rate is proportional to
  • A
    Concentration of  $`A'$
  • ✓
    Square of concentration of $ `A'$
  • C
    Under root of the concentration of $ `A'$
  • D
    Cube of concentration of $ `A'$
✓

Answer

Correct option: B.
Square of concentration of $ `A'$
b
(b)${2^2} = 4,\,\,{3^2} = 9$

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