Question

What are stoichiometric coffecients? Explain in brief.

Answer 1

Hi there!

STOICHIOMETRIC COFFECIENTS:

In general a reaction between reacting substances is described by balance equation:

aA + bB ---> cC + dD

In the above equation, A and B are reactants and C and D are products.

A balanced chemical equation is also called stoichiometric equation.

The coffecients a, b, c and d are called stoichiometric coefficients or mole coefficients of the substances.
These coffecients give the idea of the quantities of the substances consumed and also the substances produced in a chemical reaction.

This area of study is known as 'stoichiometry' , a name derived from Greek word which means measure of element .

A balanced chemical equation provides the following information:

(a) The reactants and products involved in the chemical change.
(b) The relative number of moles or molecules of the reactants and products.
(c) The relative number of parts of mass of the reactants and products.
(d) The relative volumes of gaseous reactants and products.

The quantitative relationship existing between the quantities of the reactants and the products in a chemical reaction is known as stoichiometry.

Chemical reactions are represented in a concise way, by chemical equations, using formula of the reactants and products. The mole coffecients must be kept in mind in calculations based on the equation. The exact quantities of reactants and of products those appear in the balanced chemical equation are known as stoichiometric quantities.

Hope it helps!