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JEE Main20245 Apr 2024Evening ShiftChemistryd and f Block ElementsActual

The number of ions from the following that have the ability to liberate hydrogen from a dilute acid is _____. ( Ti ²⁺, Cr ²⁺ ) and ( V ²⁺ )

Options

  1. A2
  2. B3
  3. C1
  4. D0

Correct answer

B. 3

Step-by-step solution

The ions Ti ⁺², ~V ⁺² Cr ⁺² are strong reducing agents and will liberate hydrogen from a dilute acid, eg. 2 Cr _ (aq.) ⁺²+2 H _ ( aq.) ⁺ 2 Cr _ ( aq.) ⁺³+ H ₂( ~g )

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