Question

The products of cracking an alkane X are methane, ethene and propene. The mole fraction of ethene in the products is 0.5. What is the identity of X?
1) C6H14
2) C8H18
3) C9H20
4) C11H24
@ganeshie8 @Kainui

Answer 1

I'm unfamiliar with this, but maybe this article helps: http://www.chemguide.co.uk/organicprops/alkanes/cracking.html

I'm reading it now, so maybe I can help.

Answer 2

Which means the mole fraction of propene and methane would be 0.25 each, as the total no of moles of product will equal to 1
so multiple to get a whole number and see if you can determine X