- Units & Notation
- Moles per litre
- Grams per litre
- Percent solutions
- Parts per million
- Practice problems
Practice problems
Activity 1
How many moles of Copper Sulphate are needed for 300mL of a 0.06M copper sulphate solution?
Try to attempt this problem yourself. Type-in your answer (digits only) in the text box given below and then check your answer by clicking the 'Check Answer' button.
Volume of solution is 300 millilitres. Concentration/molarity of solution is 0.06M. The amount of Copper Sulphate in moles can be calculated by placing these values in the formula for concentration. Before doing so, the volume of solution needs to be in litres. Using the conversion:
Placing the values in the formula:
we get:
From the above equation, the amount of Copper Sulphate in moles is 0.018 M
If you have got the answer right then try Activity 2, or else the video below shows a detailed step by step approach to solve the above problem.
This video contains sound.
