(1) Identify each of the following half-reactions as either an oxidation half-re
ID: 559938 • Letter: #
Question
(1) Identify each of the following half-reactions as either an oxidation half-reaction or a reduction half-reaction.
(2) Write a balanced equation for the overall redox reaction. Use smallest possible integer coefficients.
(1) Identify each of the following half-reactions as either an oxidation half-reaction or a reduction half-reaction.
(2) Write a balanced equation for the overall redox reaction. Use smallest possible integer coefficients.
Explanation / Answer
Cr(s)---------> Cr3+(aq) + 3e- oxidation
Hg2+(aq) + 2e-------->Hg(l) reduction
2Cr(s)--------->2 Cr^3+(aq) + 6e- oxidation
3Hg2+(aq) + 6e-------->3Hg(l) reduction
------------------------------------------------------------------------
2Cr(s) + 3Hg^2+ (aq) -------------> 2Cr^3+ + 3Hg(l) overall reaction
2.
I2(s) + 2e---------> 2I-(aq) reduction
Mn(s)-------->Mn2+(aq) + 2e- oxidation
I2(s) + 2e---------> 2I-(aq) reduction
Mn(s)-------->Mn2+(aq) + 2e- oxidation
-------------------------------------------------------
Mn(s) + I2(s) -------------> Mn^2+ (aq) + 2I^- (aq) overall reaction
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