Question

(a) "Covalent compounds have low melting and boiling points”. Justify this statement. (b) What is an ester P Describe an activity to form an ester in a school laboratory.

Answer 1

Answer:

Just

Explanation:

Answer 2

Dear Student,

(a) Covalent compounds have weak melting and boiling point because -

• Covalent bonds are weak as compared to ionic bonds.
• As these bonds take less energy to break, they have low boiling and melting points.

(b) Ester -

• Ester is an organic compound made by replacing the hydrogen of an acid by an alkyl or other organic group

Activity to show esterification -

• Take 1 ml of ethanol and 1 ml of ethanoic acid in a test tube.
• Put few drops of conc.H2SO4 to it.
• In this reaction, sweet smelling substance is formed. This is ethyl ethanoate (ester).

CH3COOH + CH3CH2OH --> CH3COOCH2CH3 + H2O

Thanks dear...