When electric current is passed through an ionic hydride in the molten state:
Correct answer: A. Hydrogen is liberated at the anode
- A. Hydrogen is liberated at the anode
- B. Hydrogen is liberated at the cathode
- C. No reaction takes place
- D. Hydride ions migrate towards cathode
Explanation
In the electrolysis of an ionic hydride in the molten state, hydride ions (H⁻) migrate towards the anode because they are negatively charged. At the anode, these ions lose electrons in an oxidation reaction, forming hydrogen gas (H2). Therefore, hydrogen is liberated at the anode, making Option A correct. Options B, C, and D are incorrect because they either misunderstand the migration direction of the ions or the nature of the electrochemical reactions occurring during electrolysis.
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