# What are the units for the rate constant k for a first order reaction?

## What are the units for the rate constant k for a first order reaction?

k is the first-order rate constant, which has units of 1/s. The method of determining the order of a reaction is known as the method of initial rates. The overall order of a reaction is the sum of all the exponents of the concentration terms in the rate equation.

### How do you find the rate constant k?

How to calculate the rate constant?

1. The most obvious answer to the question “How to find the rate constant?” is to modify the equations for rate of the reaction or its half life.
2. The dependence of the rate constant on temperature is well defined by the Arrhenius equation: k = A * exp(-E /(R * T)) .

What is the unit of K rate constant for first order reaction when you answer this questions study unit of k for other reactions?

Hence the unit of rate constant for first order reaction is sec−1.

What are the units of K in rate K X?

## What is the unit of rate constant k?

The units of the rate constant, k, depend on the overall reaction order. The units of k for a zero-order reaction are M/s, the units of k for a first-order reaction are 1/s, and the units of k for a second-order reaction are 1/(M·s). Created by Yuki Jung.

### What are the units of rate constant k?

What is K in a rate law?

A rate law shows how the rate of a chemical reaction depends on reactant concentration. For a reaction such as aA → products, the rate law generally has the form rate = k[A]ⁿ, where k is a proportionality constant called the rate constant and n is the order of the reaction with respect to A.

What is the unit of K in a second order reaction?

where k is a second order rate constant with units of M-1 min-1 or M-1 s-1. Therefore, doubling the concentration of reactant A will quadruple the rate of the reaction.

## What is 1st order kinetics?

Definition. An order of chemical reaction in which the rate of the reaction depends on the concentration of only one reactant, and is proportional to the amount of the reactant.

### What are the units of the rate constant k?

The units of the rate constant, k, depend on the overall reaction order. The units of k for a zero-order reaction are M/s, the units of k for a first-order reaction are 1/s, and the units of k for a second-order reaction are 1/(M·s).

What are the units of the rate constant for a first order reaction?

For first-order reactions, the relationship between the reaction half-life and the reaction rate constant is given by the expression: t 1/2 = 0.693/k Where ‘t 1/2 ’ denotes the half-life of the reaction and ‘k’ denotes the rate constant. What are the units of the rate constant for a first-order reaction?

What are the units of K for a zero order reaction?

The units of k for a zero-order reaction are M/s, the units of k for a first-order reaction are 1/s, and the units of k for a second-order reaction are 1/ (M·s). Created by Yuki Jung. Google Classroom Facebook Twitter

## Is there a formula for the constant k?

There is no general formula for the constant K you have to find it based on your units. Comment on Andrés Medrano’s post “There is no general formula for the constant K you…” Posted 2 years ago. Direct link to mohamed.jahangir’s post “What is the equation for pseudo third order rate c…”