What happens to half-life period for first order reaction if the initial concentration of the reactants is increased?

A first order reaction is the one with its rate dependent on the first power of a single reactant concentration. Therefore, the half-life period remains unchanged on increasing the initial concentrations of the reactants.

What happens to half-life when initial concentration is doubled?

when initial concentration of the reactant is doubled, the half-life period of a zero order reaction. remains unchanged. Thus, if [A]0 is doubled, t1/2 also becomes double.

What happens to half-life of a first order reaction when temperature is increased?

The half-life of the first order reaction decreases with increasing temperature.

Does the half-life of a first order reaction depend on the initial concentration?

The half-life of a reaction is the time required for a reactant to reach one-half its initial concentration or pressure. For a first-order reaction, the half-life is independent of concentration and constant over time.

What is half life period for first-order reaction?

The half-life of a reaction is the time required for the reactant concentration to decrease to one-half its initial value. The half-life of a first-order reaction is a constant that is related to the rate constant for the reaction: t1/2 = 0.693/k.

What is the half life of a first-order reaction if time required to decrease?

Concentration is reduced to 25\%. It means it takes two half-lives to decrease the concentration of reactant from 0.8 M to 0.2 M in first-order reaction. Hence, half-life of the reaction is 12/2 = 6 hours.

What is the half-life of first order reaction?

The half-life of a first-order reaction is a constant that is related to the rate constant for the reaction: t1/2 = 0.693/k. Radioactive decay reactions are first-order reactions. The rate of decay, or activity, of a sample of a radioactive substance is the decrease in the number of radioactive nuclei per unit time.

What will be the order of reaction if the half-life time of reaction is halved by making initial concentration of reactant doubled?

The half-life of a reaction is halved as the initial concentration of the reaction is doubled. The order of the reaction is. For a 1st order reaction t1/2 in independent of initial conc.

What is the half-life equation for first order reaction?

Why does half-life change with temperature?

As you have studied that half life of a first order reaction is constant at a given temperature because the formula of half life of a first order reaction is ln2/rate constant…and as you know that as the temperature increases the rate constant increases according to the Arrhenius equation so as the denominator …

What is the half-life for a first order reaction?

What is the half-life equation for a first order reaction?

The half-life of a first-order reaction is a constant that is related to the rate constant for the reaction: t1/2 = 0.693/k. Radioactive decay reactions are first-order reactions.

What is the half-life of a first order reaction?

See explanation. Explanation: The half-life of a chemical reaction, regardless of its order, is simply the time needed for half of an initial concentration of a reactant to be consumed by the reaction. Now, a first-order reaction is characterized by the fact that the rate of the reaction depends linearly on the concentration of one reactant.

Does the initial concentration of the reactant affect the half-life?

An important thing to notice here is that the half-life of a first-order reaction depends exclusively on the rate constant of the reaction. In other words, the initial concentration of the reactant has no influence on the half-life of the reaction, i.e. the half-life is constant regardless of the concentration of the reactant.

What happens when you increase the first order reactant concentration?

In such reactions, if the concentration of the first-order reactant is doubled, then the reaction rate is also doubled. Similarly, if the first-order reactant concentration is increased five-fold, it will be accompanied by a 500\% increase in the reaction rate.

Is half-life independent of concentration and constant over time?

For a first-order reaction, the half-life is independent of concentration and constant over time. The half-life of a reaction is the time required for a reactant to reach one-half its initial concentration or pressure.