JEE Main 2024 Chemistry question
The number of ions from the following that have the ability to liberate hydrogen from a dilute acid is . Ti, Cr and V
Answer: (C)
Solution
E° for M³⁺/M²⁺ is negative for Ti (−0.37 V), V (−0.26 V) and Cr (−0.41 V), so all three M²⁺ ions can reduce H⁺ to H₂.