Chemistry 9701 · AS & A Level · 3.1

3.1 — practice question

Compound X is an oxide of a Period 3 element. At $25^{\circ}\mathrm{C}$, compound X is a white solid. When it reacts with water, an acidic solution is formed. What is compound X?

  • Aaluminium oxide
  • Bsilicon dioxide
  • Csulfur dioxide
  • Dphosphorus(V) oxide

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