Question

Ch4 - methane c2h6 - ethane c3h8 - propane c4h10 - butane c5h12 – pentane the general chemical formula for an alkane is cnh2n+2. Branched alkanes - when the alkane is not just a simple straight chain of carbon atoms joined together the names become a little more complex. The longest connected chain of carbon atoms must be found as before and the alkane name generated as usual. Then the name for the pendent group is found, again by counting the number of carbon atoms present, and used as a prefix. Ch3- group : methyl___ ch3ch2- group : ethyl___ ch3ch2ch2- group : propyl___ ch3ch2ch2ch2- group : butyl___ reactions of alkanes : (i) combustion - alkanes, along with all other types of hydrocarbon, will burn in an excess of oxygen to give carbon dioxide and water only as the products,

e.G. Ch4(g) + 2o2(g)

Answer 1

What is your question? Combustion of alkanes?

Ch4 + 2O2 --> CO2 + 2H20

All hydrocarbons burn in air to give carbon dioxide and water

Answer 2

Explanation:

All hydrogen burn in air to give carbon dioxide and water