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Friday, 11 September 2026
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In the reaction 2Na + 2H₂O → 2NaOH + H₂, bubbles are formed because:

In the reaction 2Na + 2H₂O → 2NaOH + H₂, bubbles are formed because:
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  • A Sodium becomes solid
  • B Water changes colour
  • C Oxygen gas is produced
  • D Hydrogen gas is released
Correct Answer: Option D
Explanation:
Sodium reacts vigorously with water and releases hydrogen gas. The bubbles observed during the reaction are caused by the escaping hydrogen gas.

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