Question

given the value of n, write the names and molecular formula of straight chain alkanes​

Answer 1

Answer:

1. Ethane   B.C2H6

2. Butane  B.C4H10

3. Pentane B. C5H12

4 Heptane B. C7H16

5. Nonane B. C9H20

Explanation: Tama po yan nasa module yan eh page 26

Answer 2

Explanation:

The general formula for alkanes is $C_nH_2n_+_2$, Hence n is the number of atoms of carbon in their chemical structure.

However, the general formula for straight-chain alkanes is $H-(CH2)_n-H$. Methane, alkane $n=1$ is the first of the homologous series for the same, followed by $n=2$, i.e Ethane, and so on.