Electrochemical series is a series of elements arranged in increasing order of their…
Chemistry · JEE Advanced · NTA Exams — Electrochemistry
Electrochemical series is a series of elements arranged in increasing order of their reduction potential. \(\mathrm{E}_{\mathrm{H}^{+} / \mathrm{H}_{2}}^{\mathrm{o}}=0 .\) The metals above H have –ve reduction potential, they are more reactive than hydrogen whereas metals below hydrogen are less reactive than H. Reduction potential of metal depends upon
(i) sublimation energy (ii) ionisation energy and
(iii) hydration energy of ions.
Which of the following cannot evolve H2 from dil. acid ?
- Pt
- Zn
- Mg
- Pb
Answer
(A) Pt
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