The table shows the results of a series of tests with two substances, X and Y. test result with X result with Y dilute nitric acid added no reaction no reaction then aqueous silver nitrate added white precipitate no precipitate aqueous sodium hydroxide added white precipitate, insoluble in excess no precipitate then aluminium foil added; warmed gently no gas produced ammonia produced flame test orange-red flame yellow flame Which row shows the identities of the ions present in X and Y?

Which ion reacts with aqueous ammonia to give a precipitate that dissolves in an excess of ammonia?

Which statement about aqueous sodium chloride is correct?

Which compound is insoluble in water?

For which molecules are the empirical and molecular formulae the same? 1. methanoic acid, HCO2H 2. ethanoic acid, CH3…

A compound Y is thought to be an organic acid. Which reaction shows that Y is an organic acid?

A 10 cm³ sample of a gaseous hydrocarbon is completely burnt in oxygen. The total volume of the products is 70 cm³. A…