Zero Order Reaction: FAQs

What is a Zero Order Reaction?

A zero-order reaction is a chemical reaction where the rate remains constant regardless of changes in reactant concentrations. The rate of these reactions is always equal to the rate constant of the specific reactions.

What are the Characteristics of Zero Order Reaction?

The rate of reaction is independent of the reactant’s concentration. The reaction rate is related to the square root, square, or natural logarithm of the reactant’s concentration. Zero-order reactions can occur when only a small fraction of reactant molecules are in a reactive state or when some reactants have significantly higher concentrations.

How is the Rate Law Defined for a Zero Order Reaction?

In a zero-order reaction, the rate law is expressed as rate = k, where k is the rate constant. The rate constant for a zero-order reaction is typically expressed in concentration/time units like M/s.

What Determines the Half-Life of a Zero Order Reaction?

The half-life of a zero-order reaction depends on the rate constant and the initial concentration of the reactant. It can be calculated using the formula:

t1/2=[A]0/2k

How Can You Identify a Zero Order Reaction?

A zero-order reaction can be identified by observing that changes in reactant concentrations do not affect the reaction rate. If increasing or decreasing the concentration of reactants has no impact on the reaction rate, it indicates zero-order kinetics.



Zero Order Reaction

Zero Order Reaction is a type of chemical reaction where the reaction rate does not change with variations in the concentration of the reactants. In such reactions, the concentration rates remain constant over time. This type of reaction is characterized by the fact that the concentration of the reactants does not influence the reaction rate.

In this article, we look into What the order of the reaction is, what the zero-order reaction is, definition characteristics, rate law expression, etc.

Table of Content

  • What is Order of Reaction?
  • What is a Zero Order Reaction?
  • Characteristics of Zero Order Reactions
  • Rate Law for Zero Order Reactions
  • Half-Life Time (t1/2) for Zero Order Reaction
  • Zero, First and Second-Order Reactions
  • Significance of Zero Order Reactions

Similar Reads

What is Order of Reaction?

Order of a reaction refers to the relationship between the rate of a chemical reaction and the concentration of the species involved. It can be determined experimentally by observing how reactant concentration changes affect the reaction rate....

What is a Zero Order Reaction?

A zero-order reaction is a type of chemical reaction where the rate of the reaction remains constant and is independent of the concentration of the reacting substances. In a zero-order reaction, the concentration of the reactants does not change over time, and the reaction rate is always equal to the rate constant of the specific reaction. This means that increasing or decreasing the concentration of the reactants does not affect the reaction rate. The rate equation for a zero-order reaction is simply the rate constant multiplied by time....

Characteristics of Zero Order Reactions

Zero Order Reaction demonstrate the following characteristics:...

Rate Law for Zero Order Reactions

In a zero-order reaction, the rate is independent of the concentration of the reactants, and the rate constant directly determines the rate of the reaction. Rate law of a zero-order reaction is defined by the expression rate = k, where “rate” represents the reaction rate and “k” is the rate constant....

Half-Life Time (t1/2) for Zero Order Reaction

For a zero-order reaction, the half-life (t1/2​) is the time required for the concentration of the reactant to decrease to half of its initial value. The half-life for a zero-order reaction can be calculated using the following formula:...

Zero, First and Second-Order Reactions

The comparison of zero order, with the first-order and second-order reactions is as follows:...

Significance of Zero Order Reactions

The significance of a zero-order reaction lies in its unique characteristics and implications in chemical kinetics. In a zero-order reaction, the reaction rate is independent of the reactant(s) concentration and solely depends on the rate constant (k). This has several important implications:...

Sample Problems on Zero Order Reactions

Question 1: For a zero-order reaction A →P, if the initial concentration of A is 1.0 M and after 20 seconds, the concentration of A decreases to 0.6 M, calculate the rate constant k....

Practice Questions: Zero Order Reaction

Question 1: Calculate the rate constant for a zero-order reaction if the reactant concentration was 0.070 M after 160 seconds and 0.025 M after 345 seconds....

Zero Order Reaction: FAQs

What is a Zero Order Reaction?...