Question

a. Answer the questions by observing the reactivity series given below:

K,Na,Ca,Mg,Al,Zn,Fe,Ni,Sn,Pb,H,Cu,Hg,Ag,Pt,Au

(i).Why is Hydrogen placed in the metal reactivity series?
(ii).Why is Lead not used in the preparation of Hydrogen with dilute acids?
(iii).Which element undergoes reversible reaction in the formation of Hydrogen?
(iv).Which element cannot be used in the preparation of Hydrogen with dilute acid?
(v).Which substance will react with copper sulphate to give a blue colour solution?

pls answer fast pls

Answer 1

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