Chemistry · Chemical Reactions
When magnesium ribbon is burnt in air, it forms a white powdery substance A. Substance A is dissolved in water to form substance B, which turns red litmus blue. Identify the chemical formulas of substances A and B.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1MgO2 and Mg(OH)
- 2MgO2 and Mg(OH)2
- 3Mg(OH)2 and MgO
- 4MgO and Mg(OH)2✓
Correct answer
MgO and Mg(OH)2
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