A technician prepares a plant nutrient solution by dissolving 5.05 g of potassium nitrate, which has an Mr M_r\,Mr of 101, in water. The solution is made up to a volume of 250 cm3.
Calculate the concentration of potassium nitrate in mol dm−3\mathrm{mol\,dm^{-3}}moldm−3.
151 exam-style questions on Edexcel GCSE Chemistry 6.2 Quantitative analysis, covering 6.2.1 Concentration in mol dm⁻³ and titration calculations, 6.2.2 Percentage yield and why actual yield falls short, 6.2.3 Atom economy of a reaction, 6.2.4 Choosing a reaction pathway, and 6.2.5 Molar volume of gases and Avogadro's law. Each one has a worked solution and a mark scheme showing where the marks go.