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2. Acid + metal hydroxide ----->

  • Water + metal salt
  • Metal salt + hydrogen + water
  • Hydrogen chloride + calcium
  • Metal salt + hydrogen

3. Nitric acid + potassium hydroxide ----->

  • Water + Potassium nitrate
  • Potassium nitrate + hydrogen
  • Water + Potassium nitrate + hydrogen
  • Water + Potassium

4. Sodium carbonate + hydrochloric acid ----->

  • Water + carbon dioxide + sodium chloride
  • Hydrogen + water + sodium carbonate
  • Water + carbon dioxide + sodium carbonate
  • Hydrogen + sodium chloride

5. In general when a universal indicator is added what colour do acids turn?

  • Green/Yellow
  • Pink
  • Red/Orange
  • Purple/Blue

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