The equation for the reduction reaction taking place when ethanal reacts with Tollens' reagent is: A. Cu$^{2+}(aq) + e^{-} ightarrow Cu(aq) B. Ag$^{+}(aq) + e^{-} ightarrow Ag(s) C. Cr_{2}O_{7}^{2-}(aq) + 14H^{+}(aq) + 6e^{-} ightarrow 2Cr^{3+}(aq) + 7H_{2}O(l) D. MnO_{4}^{-}(aq) + 8H^{+}(aq) + 5e^{-} ightarrow Mn^{2+}(aq) + 4H_{2}O(l)

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The equation for the reduction reaction taking place when ethanal reacts with Tollens' reagent is: A - Scottish Highers Chemistry - Question 11 - 2016

Question 11

The equation for the reduction reaction taking place when ethanal reacts with Tollens' reagent is: A. Cu$^{2+}(aq) + e^{-} ightarrow Cu(aq) B. Ag$^{+}(aq) + e^{-}... show full transcript

Worked Solution & Example Answer:The equation for the reduction reaction taking place when ethanal reacts with Tollens' reagent is: A - Scottish Highers Chemistry - Question 11 - 2016

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B. Ag$^{+}(aq) + e^{-} ightarrow Ag(s)

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The reduction reaction when ethanal reacts with Tollens' reagent involves the conversion of silver ions (Ag $^{+}$ ) into solid silver (Ag). This reaction is a hallmark of Tollens’ test, where the aldehyde reduces the silver ion, producing a metallic silver mirror. This reduction can be represented by the equation:

ightarrow Ag(s)$$ This highlights the electron transfer process characteristic of reduction reactions in organic chemistry.

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