Chemistry · Electrochemistry
The standard electrode potentials (E°M3+/M2+) for V, Cr, Mn and Co are -0.26 V, -0.41 V, +1.57 V and +1.97 V, respectively. The metal ions which can liberate H2 from a dilute acid are:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Mn2+ and Co2+
- 2V2+ and Cr2+✓
- 3Cr2+ and Co2+
- 4V2+ and Mn2+
Correct answer
V2+ and Cr2+
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