A sodium chloride solution is 5.85 g dm−35.85\,\mathrm{g\,dm^{-3}}5.85gdm−3. Given Mr(NaCl)=58.5M_r(\mathrm{NaCl})=58.5Mr(NaCl)=58.5, what is the molar concentration?
1.00 mol dm−31.00\,\mathrm{mol\,dm^{-3}}1.00moldm−3
10.0 mol dm−310.0\,\mathrm{mol\,dm^{-3}}10.0moldm−3
342 mol dm−3342\,\mathrm{mol\,dm^{-3}}342moldm−3
0.100 mol dm−30.100\,\mathrm{mol\,dm^{-3}}0.100moldm−3
157 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.