1. (i) HCl, HNO3 and H2SO4 are the formulae of three compounds. Which of these compounds has the highest boiling point and which has the lowest? (Type in the FORMULAE of the compounds separated by commas. Leave no spaces around the commas.)   2. (ii) Dilute hydrochloric acid and dilute sulphuric acid are both colourless solutions. How will the addition of barium chloride solution to each help to distinguish between the two?   3. (iii) You enter a laboratory after a Class has completed the Fountain Experiment. How will you be able to tell whether the gas used in the experiment was hydrogen chloride or ammonia?