Q70 / 180 · AIIMS 2018 (27 May) · Chemistry

Which option is valid for a zero order reaction?

  • Correct answer
    A
    $t_{3 / 4}=\frac{3}{2} t_{1 / 2}$
  • B
    $t_{1 / 2}=\frac{4}{2} t_{3 / 4}$
  • C
    $t_{1 / 2}=2 t_{3 / 4}$
  • D
    $t_{3 / 4}=\left(t_{1 / 2}\right)^2$

Solution

For a zero order reaction, $A=[A]_0-k t$ $t_{1 / 2}=\frac{[A]_0}{2 k} ; t_{3 / 4}=\frac{3}{2} \frac{[A]_0}{2 k} \therefore \frac{t_{3 / 4}}{t_{1 / 2}}=\frac{3}{2}$

Hence, the correct answer is option: 'A'.

Relevant Questions