In a titration, 20.0 cm320.0\text{ cm}^320.0 cm3 of sodium hydroxide solution, NaOH\text{NaOH}NaOH, is titrated with 0.150 mol/dm30.150\text{ mol/dm}^30.150 mol/dm3 sulfuric acid, H2SO4\text{H}_2\text{SO}_4H2SO4.
2NaOH+H2SO4→Na2SO4+2H2O 2\text{NaOH} + \text{H}_2\text{SO}_4 \rightarrow \text{Na}_2\text{SO}_4 + 2\text{H}_2\text{O} 2NaOH+H2SO4→Na2SO4+2H2OIt is found that 18.40 cm318.40\text{ cm}^318.40 cm3 of sulfuric acid is required to completely neutralise the 20.0 cm320.0\text{ cm}^320.0 cm3 of the sodium hydroxide solution. Calculate the concentration of the sodium hydroxide solution in mol/dm3\text{mol/dm}^3mol/dm3. Give your answer to three significant figures.
91 exam-style questions on OCR GCSE Chemistry Monitoring chemical reactions. Each one has a worked solution and a mark scheme showing where the marks go.