# Titration Calculations

# Titration Calculations

## Molar Concentration

- Molar concentration, also known as
**molarity**, is the number of moles of solute per litre of solution. - It is measured in
**moles per litre (mol/L)**, or molar (M). - It can be calculated using the formula:
**Molarity = moles of solute / volume of solution in litres**

## Moles and Volume

- The volume of solution required to neutralise the reactant can be measured using a burette during a titration. This value is used to calculate the number of
**moles**. - The number of moles of the substance can be calculated using the formula:
**moles = molarity x volume** - Remember that the volume must be in litres when using this formula to calculate moles.

## Calculation in a Reaction

- In a titration reaction, the balanced chemical equation can be used to derive the
**stoichiometric ratio**of the reactants. - The stoichiometric ratio is the ratio of the moles of each reactant in the balanced equation.
- The number of moles of one reactant can be used to determine the number of moles of another reactant or product using the stoichiometric ratio.
- It’s essential to know the equivalent
**molarities**of your reactants when doing a titration.

## Calculating Molarity of Unknown Solution

- The molarity of an unknown solution can be calculated using the titre volume, the molarity of the other reactant, and the stoichiometric ratio.
- Use the formula:
**Molarity_unknown = (Molarity_known x Volume_known x Ratio_unknown) / (Volume_unknown x Ratio_known)** - Care should be taken to match the volume measure (usually in cm³ or dm³) with the molarity (usually in mol/dm³).

*(Remember to practice doing as many titration calculations as possible; this is the best way to familiarise yourself with the concept and application.)*