Two solutions of sodium hydroxide, A and B, were made using the same mass of sodium hydroxide.
Solution A had a volume of 250 cm3. Solution B had a volume of 1000 cm3.
Explain which solution has the higher concentration in mol/dm3\text{mol/dm}^3mol/dm3.
A third solution, C, was made by dissolving twice the mass of sodium hydroxide used for solution A in 250 cm3 of solution.
Explain how the concentration of solution C compares with the concentration of solution A.
40 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.