One mole of magnesium nitride on the reaction with an excess of water gives:
Correct answer: A. Two moles of ammonia
- A. Two moles of ammonia
- B. One mole of nitric acid
- C. One mole of ammonia
- D. Two moles of nitric acid
Explanation
When one mole of magnesium nitride reacts with an excess of water, it produces two moles of ammonia according to the balanced chemical equation: Mg3N2 + 6H2O → 3Mg(OH)2 + 2NH3. The other options are incorrect because nitric acid is not formed in this reaction, and the correct product is indeed ammonia.
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The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
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