 # Question: What Is Average Rate?

## What is the average rate of reaction?

The average rate of reaction is said to positive when the rate of concentration of product increases.

The average rate of reaction is said to negative when the rate of concentration of the reactant decreases..

## What is average rate and instantaneous rate?

The rate is a measure of the change in concentration of reactant or product with time. The average rate is the change in concentration over a selected period of time. It depends on when you take the measurements. The instantaneous rate is the rate at a particular time.

## How do I calculate mean?

The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.

## What is disappearance rate?

When you say “rate of disappearance” you’re announcing that the concentration is going down. If you wrote a negative number for the rate of disappearance, then, it’s a double negative—you’d be saying that the concentration would be going up!

## What are 5 factors that affect reaction rate?

Five factors typically affecting the rates of chemical reactions will be explored in this section: the chemical nature of the reacting substances, the state of subdivision (one large lump versus many small particles) of the reactants, the temperature of the reactants, the concentration of the reactants, and the …

## What is the rate of reaction dependent on?

The rate of chemical reactions depends on the temperature, concentration of the reactants, size of the particles reacting and whether there are any catalysts present. When the temperature is increased, the average kinetic energy of the particles present is increased.

## How do you calculate average rate?

Plan The average rate is given by the change in concentration, ∆[A], divided by the change in time, ∆t. Because A is a reactant, a minus sign is used in the calculation to make the rate a positive quantity.

## What is the formula to find rate?

Key PointsFor a generic reaction aA+bB→C aA + bB → C with no intermediate steps in its reaction mechanism (that is, an elementary reaction), the rate is given by: r=k[A]x[B]y r = k [ A ] x [ B ] y .For elementary reactions, the rate equation can be derived from first principles using collision theory.More items…

## When the average rate and instantaneous rate of reaction are equal?

the average rate and instantaneous rate of reaction are equal in zero order reaction.

## What does the rate constant mean?

The rate constant, or the specific rate constant, is the proportionality constant in the equation that expresses the relationship between the rate of a chemical reaction and the concentrations of the reacting substances.

## What is the difference between initial rate and instantaneous rate?

1. The instantaneous rate is the rate of a reaction at any particular point in time, a period of time that is so short that the concentrations of reactants and products change by a negligible amount. The initial rate is the instantaneous rate of reaction as it starts (as product just begins to form).

## What is the average rate of change over the interval?

Since the average rate of change of a function is the slope of the associated line we have already done the work in the last problem. That is, the average rate of change of from 3 to 0 is 1. That is, over the interval [0,3], for every 1 unit change in x, there is a 1 unit change in the value of the function.