ii. Brass

iii. Stainless steel

An element has an atomic number 16. State

i. the period to which it belongs.

ii. the number of valence electrons.

iii. whether it is a metal or non-metal.

Solution A is a sodium hydroxide solution. Solution B is a weak acid.
Solution C is dilute sulphuric acid. Which solution will

i. liberate sulphur dioxide from sodium sulphite?

ii. give a white precipitate with zinc sulphate solution?

iii. contain solute molecules and ions?

By the addition of only one solution, how would you distinguish between dilute
hydrochloric acid and dilute nitric acid?

Give the equation for the preparation of each of the following salts from the starting
material given.

i. Copper sulphate from copper (II) oxide

ii. Iron (III) chloride from iron