6.32 - Comparing the rates of hydrolysis reactions

Question 1

How can the progress of a hydrolysis reaction be measured?

Answer 1

By using aqueous silver nitrate in ethanol instead of using water

Question 2

What happens when silver reacts with a halogen?

Answer 2

A precipitate is formed

Question 3

What does the colour of the silver halide precipitate depend on?

Answer 3

The halogen atom/halide ion

Question 4

What colour is silver chloride?

Answer 4

White

Question 5

What colour is silver bromide?

Answer 5

Cream

Question 6

What colour is silver iodide?

Answer 6

Yellow

Question 7

Why are reaction with fluoroalkanes usually omitted?

Answer 7

Because the reactions happen incredibly slow

Question 8

What is the trend in reactivity of halogenoalkanes when the halogen is different?

Answer 8

Fastest -> Slowest

Iodo -> Bromo -> Chloro

Question 9

Why do iodoalkanes react the quickest?

Answer 9

Because the bond enthalpy of the C-I bond is much lower than that of C-Br and C-Cl bonds, so it is easier to break, meaning I+ ions are formed the easiest, allowing the reaction to happen the quickest

Question 10

What is the trend in reactivity when the structure of the halogenoalkane is different?

Answer 10

Fastest -> Slowest

Tertiary -> Secondary -> Primary