Question

Factors affecting rate? in chemical kinetics

Answer 1

Answer:

There are four main factors that can affect the reaction rate of a chemical reaction:

Reactant concentration. Increasing the concentration of one or more reactants will often increase the rate of reaction. ...

Physical state of the reactants and surface area. ...

Temperature. ...

Presence of a catalyst.

Answer 2

Explanation:

TOPIC:-

=> Reaction rate.

DEFINITION:-

=>The rate of reaction refers to the speed at which the products are formed from the reactants in a chemical reaction.

=>The rate of reaction or reaction rate is the speed at which reactants are converted into products. 

=>For example,

Wood combustion has a high reaction rate since the process is fast and rusting of iron has a low reaction rate as the process is slow.

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So,For this reaction rate we have some factors affecting it.

Those factors are,

=>Nature of the reaction.

The rate of reaction is generally slower in liquids when compared to gases and slower in solids when compared to liquids.

Size of the reactant also matters a lot.

The smaller the size of reactant, the faster the reaction.

=>Effect of concentration on reaction rate.

According to the collision theory, the rate of reaction increases with the increase in the concentration of the reactants.

Time plays a major role in changing the concentration of reactants and products.

Therefore, even time is a vital factor affecting the reaction rate.

=>Pressure factor

Pressure increases the concentration of gases which in

turn results in the increase of the rate of reaction.

The reaction rate increases in the direction of less gaseous molecules and decreases in the reverse direction.

=>Solvent

The rate of reaction also depends on the type of solvent. Properties of solvent and ionic strength highly affect the reaction rate.

=>Order

The order of reaction manages how the reactant pressure or concentration affects the rate of reaction.

=>Electromagnetic Radiation

Electromagnetic radiation is a form of energy and its presence at the chemical reaction may increase the rate of reaction as it gives the particles of reactants more energy.

=>Intensity of Light

Even the intensity of light affects the rate of reaction. Particles absorb more energy with the increase in the intensity of light thereby increasing the rate of reaction.

Therefore, these are the factors affecting the reaction rate in chemical kinetic.