Which of the following products are obtained when a zinc metal is dipped in dilute HCl solution?(a) H2, ZnCl2(b) Cl2, ZnH2(c) H2, Cl2 and ZnH2(d) Zn, H2 and Cl2I had been asked this question in an interview.The origin of the question is Corrosion Principles topic in division Corrosion Principles of Corrosion Engineering

Which of the following products are obtained when a zinc metal is dipp

1.	Which of the following products are obtained when a zinc metal is dipped in dilute HCl solution?(a) H2, ZnCl2(b) Cl2, ZnH2(c) H2, Cl2 and ZnH2(d) Zn, H2 and Cl2I had been asked this question in an interview.The origin of the question is Corrosion Principles topic in division Corrosion Principles of Corrosion Engineering
Answer» CORRECT answer is (a) H2, ZnCl2 The best I can explain: When zinc is PLACED in dilute hydrochloric acid, a vigorous reaction OCCURS. Hydrogen gas is EVOLVED and the zinc dissolves, by forming a solution of zinc chloride. Anodic reaction: Zn==>Zn^+2+2e(Zn^+2+2Cl^– ==>ZnCl2) CATHODIC reaction: 2H^++2e==>H2

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