Question

If the initial concentration of substance A is 1.5 M and after 120 seconds the concentration of substance A is 0.75 M, the rate constant for the reaction if it follows zero-order kinetics is ______.

पर्याय

• 0.00625 molL^-1s^-1

• 0.00625 s^-1

• 0.00578 molL^-1s^-1

• 0.00578 s^-1

Answer 1

If the initial concentration of substance A is 1.5 M and after 120 seconds the concentration of substance A is 0.75 M, the rate constant for the reaction if it follows zero-order kinetics is 0.00625 molL^-1s^-1.

Explanation:

For Zero order reaction,

k = `(["R"]_0 - ["R"])/"t"`

k = `(1.5 - 0.75)/120`

k = 0.00625 molL^-1s^-1