Chemistry

[franc1s]

what are the combustion products of  wax candle? (candle wax is a hydrocarbon)

[j2buttonsw]

Assume that it combusts completely then the candle wax (constituents of which are are C, H and O) will produce CO2 and H2O. Similarly, the wick also burns and is also comprised of C, H and O which will also produce CO2 and H2O. If it is incomplete then CO and partailly oxidised hydrocarbons may be produced.

[brachiopod]

How many marks for this question? (It should be written on the exam paper.)

[stevie21]

I agree with mr j2, especially if this isn't for 10 marks as it's quite basic chemistry.
I say that only because I knew the answer and my understanding of chemistry is basic.
Burning any hydrocarbon gives water and CO2 I think.

[Gef]

You get a mixture of carbon dioxide, carbon monoxide, water and carbon (which produces the yellow flame). No such things as partially oxidised hydrocarbons.