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Sagot :
Answer:
An acid is a substance that produces hydrogen ions, H+(aq), when dissolved in water.
The higher the concentration of hydrogen ions in the solution, the lower the pH. (Higher tier)
An alkali is a substance that produces hydroxide ions, OH-(aq), when dissolved in water.
Explanation:
For example, hydrochloric acid ionises completely into hydrogen and chloride ions:
HCl(aq) → H+(aq) + Cl-(aq)
Strong acids include:
hydrochloric acid
sulfuric acid
nitric acid
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