Calculating the Amount of Solute
Chemistry: AQA GCSE Higher, topic 3.1.25
Calculations Using Equations for the Concentrations of Solutions
We can use information about a solution to work out which chemicals were in it to start with.
Amount of a solute
- We can calculate the amount of a solute (dissolved substance) in a solution if we know:
- The concentration of the solution.
- The volume of the solution.
Concentration of a solution
- We can calculate the concentration of a solution if we know:
- The volumes of 2 solutions that react completely.
- The concentration of 1 of these solutions.
Test yourself on Calculating the Amount of Solute
What do we need to know about a solution to calculate the amount of a solute present?
A solution has a concentration of 2 mol/dm3 and contains 6 mol of solute. What is the volume of the solution?
Solution A has a volume of 0.5 dm3 and a concentration of 0.4 mol/dm3. It reacts completely with 1 dm3 of solution B in a 1:1 mole ratio. What is the concentration of solution B?
What do we need to know to calculate the concentration of a solution?
A solution contains 0.3 mol of solute dissolved in a volume of 1.5 dm3. What is the concentration of the solution?