A student carries out two experiments. In experiment 1, ammonium carbonate is allowed to react with dilute hydrochloric acid. In experiment 2, ammonium carbonate is heated together with aqueous sodium hydroxide. For each experiment, the gas produced is examined using damp blue litmus paper and damp red litmus paper. Which row correctly indicates the colour of both pieces of litmus paper at the end of each experiment?
- Aexperiment 1: blue; experiment 2: blue
- Bexperiment 1: blue; experiment 2: red
- Cexperiment 1: red; experiment 2: blue
- Dexperiment 1: red; experiment 2: red