The mole concept and concentration of solutions (IEB)

Mole, n

The si unit for the amount of substance

Molar mass, M

The mass in grams of one mole of that substance

Molar concentration

The amount of solute per unit volume of solution

% yield

A measure of the extent of a reaction, generally measured by comparing the amount of product against the amount of product that is actually possible, expressed as a percentage

Standard temperature and pressure (STP)

Temperature of 0°C (273 K) and pressure of 1 atmosphere (101,3 kPa)

Molar gas volume

Vm = 22,4 dm3.mol-1 which means 1 mole of gas occupies 22,4 dm3 at STP, ie 0°C (273 K) and 1 atmosphere (101,3 kPa)

Empirical formula

Gives the simplest ratio of elements in a compound

Molecular formula

Chemical formula that indicates the type of atoms and the correct number of each in a molecule

Solution

A homogenous mixture of solute and solvent

Saturated solution

A solution that cannot dissolve any more solute

Solute

The substance that is dissolved in the solution

Solvent

The substance in which another substance is dissolved, forming a solution