# What is the value of rate constant?

What is the value of rate constant?

## What is the value of rate constant?

The value of the rate constant is temperature dependent. A large value of the rate constant means that the reaction is relatively fast, while a small value of the rate constant means that the reaction is relatively slow.

## How do you find the value of the rate constant?

To find the rate constant:

1. Determine how many atoms are involved in the elementary step of the reaction.
2. Find out the order of reaction for each atom involved in the reaction.
3. Raise the initial concentration of each reactant to its order of reaction, then multiply them all together.

What is the value of R in rate law?

The value of the gas constant, R, is 8.31 J K-1 mol-1.

### Is rate and k the same?

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 K in chemical reaction?

The equilibrium constant of a chemical reaction (usually denoted by the symbol K) provides insight into the relationship between the products and reactants when a chemical reaction reaches equilibrium.

Does the value of rate constant change?

The value of rate constant for the same reaction changes with temperature. 4. The value of rate constant for a reaction does’t depend upon the concentration of the reactants.

## What is K in first order reaction?

‘k’ is the rate constant of the first-order reaction, whose units are s-1. ‘[A]’ denotes the concentration of the first-order reactant ‘A’. d[A]/dt denotes the change in the concentration of the first-order reactant ‘A’ in the time interval ‘dt’.

## What is the value of R in Arrhenius equation?

8.314 J/mol-K
The value of the slope (m) is equal to -Ea/R where R is a constant equal to 8.314 J/mol-K. The activation energy can also be found algebraically by substituting two rate constants (k1, k2) and the two corresponding reaction temperatures (T1, T2) into the Arrhenius Equation (2).