Nitric acid is a strong acid. A technician makes a particle model of 100 nitric acid molecules after they have been added to water. The model can show HNO3\text{HNO}_3HNO3 molecules, H+\text{H}^{+}H+ ions and NO3−\text{NO}_3^{-}NO3− ions.
Which description of the technician's model is correct?
The model contains 100 HNO3\text{HNO}_3HNO3 molecules and contains no H+\text{H}^{+}H+ ions or NO3−\text{NO}_3^{-}NO3− ions.
The model contains no HNO3\text{HNO}_3HNO3 molecules and contains 100 H+\text{H}^{+}H+ ions and 100 NO3−\text{NO}_3^{-}NO3− ions.
The model contains no HNO3\text{HNO}_3HNO3 molecules and contains 100 H+\text{H}^{+}H+ ions but no NO3−\text{NO}_3^{-}NO3− ions.
The model contains some HNO3\text{HNO}_3HNO3 molecules and contains some H+\text{H}^{+}H+ ions and NO3−\text{NO}_3^{-}NO3− ions.
88 exam-style questions on AQA GCSE Chemistry 4.2 Reactions of acids, covering 4.2.1a Reactions of acids with metals, 4.2.1b Redox in acid-metal reactions, 4.2.2 Neutralisation of acids and salt production, 4.2.3 Soluble salts, 4.2.4 The pH scale and neutralisation, 4.2.5a Titrations, 4.2.5b Calculating quantities in titrations, and 4.2.6 Strong and weak acids. Each one has a worked solution and a mark scheme showing where the marks go.