A laboratory has three samples of calcium chloride solution. A reaction requires exactly 0.0300 mol of calcium chloride. The entire contents of two sample bottles must be used.
The relative formula mass, MrM_rMr, of calcium chloride is 111.
| Sample | Volume of solution | Concentration |
|---|---|---|
| A | 40.0 cm3 | 0.200 mol/dm3 |
| B | 100 cm3 | 11.1 g/dm3 |
| C | 50.0 cm3 | 0.400 mol/dm3 |
Calculate the amount, in mol, of calcium chloride in each sample.
Give the two samples that should be used.
Show your working.
106 exam-style questions on AQA GCSE Chemistry 3.4 Using concentrations of solutions in mol/dm3, covering 3.4.1 Concentration in mol/dm3. Each one has a worked solution and a mark scheme showing where the marks go.