Question

(a) what is the activity seriers of metals? arrange the metals Zn,mg,AI,cu and Fe in a decreasing order of reactivity.
(b) what would you observe when you put some zinc pieces into blue copper sulphate solution? some copper picees into green ferrous sulphate solution (c) name a metal which combines with hydrogen gas. name the compound formed​

Answer 1

Answer:

c) answer - oxygen combines with hydrogen to form water

Explanation:

a) answer- Mg<Al<Zn<Fe<Cu -decreasing order

b) answer- the colour of the copper sulphate solution fades and becomes green in colour as zinc displaces cu as zinc is more reactive than copper and you will observe a coating or deposition on zinc that is reddish in colour that is the copper deposition .

Zn+CuSO4= ZnSO4+ Cu

ii) no reaction will take place as copper cannot replace iron as iron is more reactive than copper