Cannizzaro Reaction of Formaldehyde
2HCHO + NaOH → HCOONa + CH3OH
Обзор
In the Cannizzaro reaction, two molecules of a non-enolizable aldehyde undergo disproportionation in the presence of strong base. One molecule is oxidized to a carboxylate salt while the other is reduced to an alcohol. Formaldehyde disproportionates to sodium formate and methanol.
Участники
| Роль | Вещество | Коэффициент | Состояние |
|---|---|---|---|
| Реагент | Sodium Hydroxide NaOH | 1 | (aq) |
| Реагент | Formaldehyde CH₂O | 2 | (aq) |
| Продукт | Methanol CH₃OH | 1 | (l) |
Пример из жизни
The Cannizzaro reaction demonstrates that oxidation and reduction can occur simultaneously between identical molecules (disproportionation).
Промышленное значение
The crossed Cannizzaro reaction of formaldehyde with other aldehydes produces polyols like pentaerythritol, used in alkyd resins and explosives (PETN).
Свойства
- Тип
- Organic
- Обратимая
- Нет
- Энергия
- Экзотермическая
- ΔH
- -60,0 kJ/mol
Связанные реакции
Swern Oxidation
Oxidation of Secondary Alcohol to Ketone
Claisen Condensation (Ethyl Acetate)
Kolbe Electrolysis
Baeyer-Villiger Oxidation
Beckmann Rearrangement (Cyclohexanone Oxime)
Catalytic Hydrogenation of Ethylene
Condensation Polymerization (Nylon 6,6)
Cope Rearrangement
Epoxidation of Alkenes (mCPBA)
Frequently Asked Questions
What is the equation for Cannizzaro Reaction of Formaldehyde?
The balanced equation is: 2HCHO + NaOH → HCOONa + CH₃OH.
What type of reaction is Cannizzaro Reaction of Formaldehyde?
Cannizzaro Reaction of Formaldehyde is a organic reaction.
Is Cannizzaro Reaction of Formaldehyde exothermic or endothermic?
Cannizzaro Reaction of Formaldehyde is exothermic (releases energy). The enthalpy change (ΔH) is -60.0 kJ/mol.