Cannizzaro Reaction of Formaldehyde

2HCHO + NaOH → HCOONa + CH₃OH

Tổng quan

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.

Người tham gia

Vai trò	Chất	Hệ số	Trạng thái
Chất phản ứng	Sodium Hydroxide NaOH	1	(aq)
Chất phản ứng	Formaldehyde CH₂O	2	(aq)
Sản phẩm	Methanol CH₃OH	1	(l)

Ví dụ thực tế

The Cannizzaro reaction demonstrates that oxidation and reduction can occur simultaneously between identical molecules (disproportionation).

Tầm quan trọng công nghiệp

The crossed Cannizzaro reaction of formaldehyde with other aldehydes produces polyols like pentaerythritol, used in alkyd resins and explosives (PETN).

Tính chất

Loại: Organic
Thuận nghịch: Không
Năng lượng: Tỏa nhiệt
ΔH: -60,0 kJ/mol

Phản ứng liên quan

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.