Question

Give a balanced equation to prepare hydrogen starting with each of the following substances :
(i) a dilute mineral acid
(ii) cold water
(iii) acidulated water
(iv) a hot concentrated alkali
(v) steam
(vi) a metal hydride
(vii) Carbon (in the form of coke)​

Answer 1

Answer:

Zn+2HCI Znc12+H2

Explanation:

Balanced chemical equation is zinc + 2 hydrogen chloride. zinc chloride + Hydrogen2