Sodium Hydroxide and Hydrochloric Acid Neutralization
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NaOH + HCl → NaCl + H2O
Visão geral
Sodium hydroxide reacts with hydrochloric acid to produce sodium chloride and water. This is the archetypal neutralization reaction, producing exactly neutral pH 7 solution because both the acid and base are strong. The heat of neutralization is approximately -57.1 kJ/mol for any strong acid-strong base pair.
Participantes
| Papel | Substância | Coeficiente | Estado |
|---|---|---|---|
| Reagente | Sodium Hydroxide NaOH | 1 | (aq) |
| Reagente | Hydrochloric Acid HCl | 1 | (aq) |
| Produto | Sodium Chloride NaCl | 1 | (aq) |
| Produto | Water H₂O | 1 | (l) |
Exemplo do cotidiano
Antacid tablets neutralize excess stomach acid using a similar type of reaction, though they typically use weaker bases like magnesium hydroxide.
Importância industrial
As reações de neutralização são fundamentais para o tratamento de águas residuais, produção química e processamento alimentar. O controlo preciso do pH nos processos industriais depende desta química.
Propriedades
- Tipo
- Double Replacement
- Reversível
- Não
- Energia
- Exotérmico
- ΔH
- -57,1 kJ/mol