__Stoichiometry, Its Assumptions and Calculations__

__Stoichiometry__
The branch of chemistry which deals with the study of quantitative relationship between reactants and products in a balanced chemical equation is called stoichiometry.

**Stoichiometric Amounts**

The amounts of the reactants or the products as given by the balanced chemical equation are called stoichiometric amounts.

**2H2 + O2 → 2H2O**

**2 mole 1 mole 2 moles**

**4 g 32 g 36 g**

__Assumptions__
When stoichiometric calculations are performed, we have to assume the following conditions.

(i) All the reactants are completely converted into products.

(ii) No side reaction occurs.

**During stoichiometric calculations, law of conservation of mass and law of definite proportions are obeyed.**

__Calculations__**(i) Mass-mass Relationship:**If we are given mass of one substance, we can calculate the mass of the other substance involved in the chemical reaction.

**(ii) Mass-mole Relationship:**If we are given the mass of one substance, we can calculate the moles of the other substance and vice versa.

**(iii) Mass-volume Relationship:**If we are given mass of one substance, we can calculate the volume of the other substance and vice versa.

(iv) Similarly,

**mole-mole calculations**can also be performed.
## No comments:

## Post a Comment