Question

Write the formulas of the predecessor and successor of the following:
(a) C2H5OH (b) C2H5CHO (c) CH3COOH​

Answer 1

Answer:

Refer to the above attachments

Answer 2

The formulae of the predecessor and successor of the following compounds are:

• For C2H5OH, the formula for predecessor is CH3OH and the formula for the successor is C3H7OH.
• For C2H5CHO, the formula for predecessor is CH3CHO and the formula for the successor is C3H7CHO.
• For CH3COOH, the formula for predecessor is HCOOH and the formula for the successor is C2H5COOH.
• The predecessor and successor of the compounds can be known by identifying the homologous series of the compound.
• The two consecutive compounds of a homologous series differs by a -CH2 group.