Ammonium phosphate, (NH4)3PO4(\text{NH}_4)_3\text{PO}_4(NH4)3PO4, is a highly concentrated NP (nitrogen-phosphorus) fertiliser. It is industrially synthesised by reacting gaseous ammonia with an inorganic acid.
Which acid must be reacted with ammonia to produce ammonium phosphate?
nitric acid
phosphoric acid
phosphorous acid
sulfuric acid
276 exam-style questions on Edexcel GCSE Chemistry 4.1 Acids, covering 4.1.1 Acids, alkalis and the pH scale, 4.1.2 Hydrogen ion concentration and pH, 4.1.3 Dilute and concentrated, weak and strong acids, 4.1.4 Bases, alkalis and the reactions of acids, 4.1.5 Chemical tests for hydrogen and carbon dioxide, 4.1.6 Neutralisation as a reaction of acids with bases, 4.1.7 Preparing soluble salts, and 4.1.8 Solubility rules and preparing insoluble salts. Each one has a worked solution and a mark scheme showing where the marks go.