Alkanes

19. ​​ M/J 2017/P12/Q34, M/J 2017/P11/Q37

One mole of each alkane undergoes complete combustion.

Which alkane will produce seven moles of products?

A​​  ​​ ​​ ​​ ​​ ​​​​ CH4​​  ​​ ​​ ​​ ​​ ​​ ​​​​ B​​  ​​ ​​ ​​ ​​ ​​ ​​​​ C2H6​​  ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ C​​  ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ C3H8​​  ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ D​​  ​​ ​​ ​​ ​​ ​​ ​​​​ C4H10

 

Answer: ​​ C

Explaination

The equation for complete combustion in alkane is

Alkane ​​ + ​​ oxygen ​​ = ​​ carbon dioxide + water