Question

In a zero-order reaction:

• A. The rate constant has the unit mol $L^{-1}{s}^{-1}$
• B. The rate is independent of the concentration of the reactants.
• C. The half-life depends on the concentration of the reactants.
• D. The rate is independent of the temperature of the reaction.

Answer 1

Answer: (A), (B), (C)

The rate constant has the unit mol $L^{-1}{s}^{-1}$
The rate is independent of the concentration of the reactants.
The half-life depends on the concentration of the reactants.

For zero order,

Rate $=K[A{]}^0\Rightarrow rate=K$

Zero-order is independent of the concentration and unit of rate constant is $mole{L}^{-1}se{c}^{-1}$

$t_{{}^1{/}_2}=\frac{A_0}{2K}$

From the given equation it is clear that for zero-order reaction the half-life period is dependent on concentration.