Question

Zn gives H₂ gas with H₂SO₄ and HCl but not with HNO₃ because
(a) Zn acts as an oxidising agent when it reacts with HNO₃
(b) HNO₃ is weaker acid than H₂SO₄ and HCl
(c) In electrochemical series, Zn is above hydrogen
(d) NO₃Ⓜ️ is reduced in preference to hydronium ion

Answer 1

gives H₂ gas with H₂SO₄ and HCl but not with HNO₃ because

(a) Zn acts as an oxidising agent when it reacts with HNO₃...... hjdbfkdsbgf

Answer 2

Explanation:

Correct option (d) NO3 is reduced in preference to hydronium ion.

Explanation : Zinc is or.r the top position of hydrogen in electrochemical series. So Zn displaces H2 from dilute H2SO4 and HCl with iiberation of H2. On the other hand HNO3 is an oxidising agent. Hydrogen obtained in this reaction is converted into H2O.