JEE Main 2017 Chemistry question
Consider the following standard electrode potentials ( in volts) in aqueous solution: Al — , ; Tl — , . Based on these data, which of the following statements is correct?
Answer: (4)
Solution
The key is that a **more positive** reduction potential means the oxidised form is more easily reduced, i.e. **less stable** in solution; a **more negative** value means the ion resists reduction and is therefore **more stable**. Tabulating:
\mathrm{}\ (-1.66)\ very stable; \mathrm{}\ (+0.55)\
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