Question

what is action 1) HBr 2) 40%H2SO4 in presence of 1% HgSO4 on ethyne​

Answer 1

Answer:

HgSO4 and aqueous dilute H2SO4 is used for alkyne hydration. Alkynes hydration is much harder than alkene hydration.

Reaction of alkyne with HgSO4 and H2SO4

Explanation:

Answer 2

(1). 2 HBr (aq) + C$_{2}$H$_{2}$ (g) → C$_{2}$H$_{4}$Br$_{2}$ (l)

• C$_{2}$H$_{2}$ is a colourless gas .

• C$_{2}$H$_{2}$ has faint, ethereal odour .

• HBr is a colorless gas and its solution is faint yellow in colour .

(2). C$_{2}$H$_{2}$ + H$_{2}$SO$_{4}$ + HgSO$_{4}$ →  CH$_{3}$CHO

• Acetaldehyde is formed .
• It is used to produce disinfectants, drugs and perfumes .