Describe the different forms of chemical reactions and factors which affect chemical reactions citing specific examples...

Describe the different forms of chemical reactions and factors which affect chemical reactions citing specific examples from the human body.

Expert Solution

Forms of chemical reaction

1)Combination reaction:- In this type of reaction Two or more compounds combine to form one compound.

eg:-hydrogen and chlorine react to form hydrochloric acid

2) Decomposition reaction:- This reaction is opposite of a combination reaction in which a complex molecule breaks down to make simpler molecules

eg:-starch decomposes in to sugar in the body and proteins get decomposed into smaller substances called amino acids.

3) Precipitation reaction:- In this type of reaction two solutions of soluble salts are mixed which results in an insoluble solid (precipitate) forming.

eg:-reaction between antigens and antibodies is a precipitation reaction in human body.

4)Neutralization reaction :- In this type of reaction An acid and a base react with each other. and product of this reaction is a salt and water.

eg:-whenever an acid or a base is added to the blood, it reacts with either the carbonic acid or the bicarbonate, just as other neutralization reaction involving an acid and a base.

5) Combustion reaction:- In this type of reaction Oxygen combines with a compound to form carbon dioxide and water.they give off heat i.e exothermic reaction.

eg:-During cellular metabolism, the molecule glucose combines with oxygen and reacts to form carbon dioxide and water, as well as ATP.

6)Displacement reaction :- In this type of reaction one element takes place with another element in the compound.

eg:-Reaction of iron nails with copper sulphate solution.

Factors affecting chemical reaction

->Reactant concentration:- with Increase in the concentration of one or more reactants will often increase the rate of reaction.

->Physical state of the reactants and surface area:- the rate of reaction depends on the medium in which reaction occurs.

->Temperature of the reactants :-an increase in temperature is lead to an increase in the reaction rate. Temperature is a measure of the kinetic energy of a system, so higher th temperature , higher the average kinetic energy of molecules and more collisions per unit time

-> Presence of a catalyst.:-lower the activation energy of a chemical reaction and increase the rate of a chemical reaction without being self used in the reaction .

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gladiator answered 2 years ago

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