(a) A reaction that takes place when two solutions are mixed, there is an exchange of ions leading to formation of a ppt
b)

- Add lead II nitrate solution to sodium sulphate

- Filter the mixture to obtain lead sulphate as residue and sodium nitrate as filtrate

- Rinse the residue with distilled water and dry it between filter papers

Let the oxidation state for Mn be x

x '3 (-2) =0

x = +6 (the sign must be shown) Systematic name of Mn O3 is manganese (vi) Oxide

a) Amount of solute in grams that can dissolve 100g of water to form a saturated solution at a given temperature

b) 52.2 - 19.0= 33.2g

Deflagrating spoon

Use: to Burn solid substance

b) Because of the lone pair of electrons

- Distilled water is added to the mixture, potassium Chloride dissolves and lead (ii) chloride does not

- Filter to obtain potassium chloride as a filtrate and lead (ii) chloride as a residue√

-Dry the residue to obtain dry √1 lead ii Chloride

-Evaporate the filtrate using an evaporation dish to obtain solid potassium chloride

Poisonous carbon (ii) oxide is produced in absence of enough air.

a. Hydrated ion III oxide.

b. -Oxygen

-Moisture.

c. Aluminum spontaneously reacts with oxygen to form a thin oxide layer that prevents further oxidation of iron.

Has white hot glowing carbon particles