Question

The relationship between rate constant and half-life period of zero order reaction is given by:

• A. $t_{1/2}=\left[A_0\right]2k$
• B. $t_{1/2}=\frac{0.693}{k}$
• C. $t_{1/2}=\frac{\left[A_0\right]}{2k}$
• D. $t_{1/2}=\frac{2\left[A_0\right]}{2k}$

Answer 1

The correct option is C $t_{1/2}=\frac{\left[A_0\right]}{2k}$

The relationship between rate constant and half-life period of zero-order reactionon is given by:
$t=\frac{\left[A_0\right]-\left[A\right]}{k}$
At, $t=t_{1/2},\left[A\right]=\frac{1}{2}\left[A_0\right]$
$t_{1/2}=\frac{\left[A_0\right]}{2k}$
Hence, option (c) is correct.