Cannizzaro Reaction of Formaldehyde
2HCHO + NaOH → HCOONa + CH3OH
نظرة عامة
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.
المشاركون
| الدور | المادة | المعامل | الحالة |
|---|---|---|---|
| متفاعل | Sodium Hydroxide NaOH | 1 | (aq) |
| متفاعل | Formaldehyde CH₂O | 2 | (aq) |
| منتج | Methanol CH₃OH | 1 | (l) |
مثال من الحياة اليومية
The Cannizzaro reaction demonstrates that oxidation and reduction can occur simultaneously between identical molecules (disproportionation).
الأهمية الصناعية
The crossed Cannizzaro reaction of formaldehyde with other aldehydes produces polyols like pentaerythritol, used in alkyd resins and explosives (PETN).
الخصائص
- النوع
- Organic
- قابل للعكس
- لا
- الطاقة
- طارد للحرارة
- ΔH
- -60,0 kJ/mol
التفاعلات ذات الصلة
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.