Chemistry 0620 · IGCSE · The characteristic properties of acids and bases

The characteristic properties of acids and bases — practice question

When fossil fuels burn, sulfur dioxide is produced and this can cause acid rain. Which ion in rainwater makes it acidic?

  • A$\text{H}^+$
  • B$\text{OH}^-$
  • C$\text{O}^{2-}$
  • D$\text{SO}_4^{2-}$

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