Question

The diagram shows a screwdriver being used as a lever to open a tin

Answer 1

Answer:

(a) Most reactive ${}$       Metal B

${}$                                    Metal D

${}$                                    Metal A

Least reactive ${}$           Metal C

(b) (i) Bubbles should form very slowly

(ii) No reaction takes place

Explanation:

(a) The given metals arranged in their order of reactivity are;

Most reactive ${}$       Metal B

${}$                               Metal D

${}$                               Metal A

Least reactive ${}$      Metal C

The other of reactivity is based on the nature of their reactivity of the metals in air

(b) (i) Based on the reactivity of the metals in air, whereby metal A reacts very slowly and an oxide is formed, we have that, based on the reactivity of the metal A, when mixed with dilute hydrochloric acid, bubbles should form very slowly

(ii) Similarly, given that metal C is unreactive, we have that when small pieces of metal C are added to dilute hydrochloric acid, no reaction takes place.