Question

write definition of zero order reaction​

Answer 1

Explanation:

a chemical reaction in which the rate of reaction is constant and independent of the concentration of the reacting substances is called zero ouder reaction.

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Answer 2

Answer:

Zero-order reaction is a chemical reaction wherein the rate does not vary with the increase or decrease in the concentration of the reactants.

Examples of Zero Order Reaction

The following reactions are examples of zero order reactions that are not dependant on the concentration of the reactants.

The reaction of hydrogen with chlorine (Photochemical reaction).

H2(g)+Cl2(g)→hv2HCl(g)

Decomposition of nitrous oxide over a hot platinum surface.

2N2O→Pt(hot)2N2+O2

Iodization of Acetone (In H+ ion rich medium)

CH3COCH3+I2→H+ICH2COCH3+HI

Reactions wherein a catalyst is required (and is saturated by reactants) are generally zero order reactions. The unit of the rate constant in a zero order reaction is given by concentration/time or M/s where ‘M’ is the molarity and ‘s’ refers to one second.