Question

What would be the formula for an alkane which contains 30 hydrogen atoms? C__H30 16 18 14 15

Answer 1

The formula would be C14H30.

Answer 2

Answer: Option (c) is the correct answer.

Explanation:

A hydrocarbon that contains only carbon and hydrogen atoms attached through single bonds is known as an alkane.

General formula for alkanes is $C_{n}H_{2n+2}$ where n is any integer.

For example, a hydrocarbon with 30 hydrogen atoms will have the value of "n" as follows.

                        Total hydrogen atoms = 2n + 2

                                         30 = 2n + 2

                                   30 - 2 = 2n

                                            n = 14

Therefore, number of carbon atoms in this hydrocarbon will be 14.

Hence, we can conclude that formula for an alkane which contains 30 hydrogen atoms is $C_{14}H_{30}$.