Mole Concept and Stoichiometry Vocabulary

Flashcards for vocabulary terms related to the mole concept and stoichiometry.

Law of Multiple Proportions

When two elements form two or more compounds, the masses of one element that combines with a fixed mass of the other element does so in a whole number ratio.

Law of Reciprocal Proportion

The masses/weights of two elements that combine with a fixed mass of a third element are in a whole number ratio.

Equivalent

A unit of amount, similar to 'mol'.

Number of Equivalents

The number of moles of a substance multiplied by its n-factor.

n-factor

A factor that depends on the substance and the reaction it undergoes (e.g., acidity, basicity, redox change).

E

The equivalent weight of a substance.

Normality (N)

The number of gram equivalents of solute per liter of solution (Eq/L).

Molarity (M)

Moles of solute per liter of solution (mol/L).

Mole Fraction

The ratio of moles of a component to the total moles in a solution.