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Choose the correct phrase(s) that can apply to first order reactions.
I) The overall rate of the reaction is proportional to the concentration of one of the reactants.
II) If the concentration of the reactant is doubled, the rate is doubled.
III) The unit of rate constant for a first order reaction is sec-1 or time-1.
  • a)
    I and III only
  • b)
    I and II only
  • c)
    I only
  • d)
    I, II and III
  • e)
    III only
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Choose the correct phrase(s) that can apply to first order reactions.I...
Rate of a first order reaction, depends only on one of the reactant's concentrations. When the concentration of the reactant is increased by ‘n' times, the rate of reaction is also increased by ‘n' times. The unit of rate constant for the first order reaction is sec-1 or time-1.
k1 = rate/ (a-x) = mol.lit-1sec-1/ mol.lit-1 = sec-1
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Choose the correct phrase(s) that can apply to first order reactions.I) The overall rate of the reaction is proportional to the concentration of one of the reactants.II) If the concentration of the reactant is doubled, the rate is doubled.III) The unit of rate constant for a first order reaction is sec-1 or time-1.a)I and III onlyb)I and II onlyc)I onlyd)I, II and IIIe)III onlyCorrect answer is option 'D'. Can you explain this answer?
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