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Question
Besides its ability to function as an acid, hydrosulfuric acid, H2S, is able to act as a reducing agent. Which one of the following equations illustrates this property of H2S?
A) H2S(aq) + 2OH-(aq) →S2-(aq) + 2H2O(l)
B) H2S(aq) + 2Na(s) →H2(g) + 2Na+(aq) + S2-(aq)
C) H2S(aq) + 2AgI(s) →Ag2S(s) + 2H+(aq) + 2I-(aq)
D) H2S(aq) + Cu2+(aq) →CuS(s) + 2H+(aq)
E) 3H2S(aq) + 2H+(aq) + 2NO3-(aq) →3S(s) + 2NO(g) + 4H2O(l)
Answer
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