Q. 635.0( 4 Votes )
Hydrochloric acid re
(b) (i) When hydrochloric acid reacts with Zn, hydrogen gas and zinc chloride are formed Zn + 2HCl ⇨ ZnCl2 + H2
(ii) Sodium hydroxide gives hydrogen gas and sodium zincate when reacts with zinc metal.
2NaOH + Zn ⇨ Na2ZnO2 + H2
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