Please answer this query with explanation. The half cell reactions of Cu, Zn and Ag are all below those of Cl- and NO3- then how should I identify the correct metal?
Asked by vidyuti.varma
6th July 2016,
4:41 PM
Answered by Expert
Answer:
Any metal below the H+ / H2 half-cell reduction potential would be expected to dissolve in HCl. This happens because when the half-cell oxidation potential for metal is combined with the half-cell reduction potential for H+ / H2, a positive voltage will result, indicating a spontaneous reaction.
In similar way metals lying below the NO3- / NO half-cell reduction potential would be expected to dissolve in HNO3.
Answered by Expert
7th July 2016,
11:24 AM
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