# Ethylene reaction

1. Feb 8, 2005

### tandoorichicken

just a basic rookie question. What are the products when ethylene reacts with fluorine gas (i.e., burned in presence of fluorine)?

I was given the following data:
$H_2 + F_2 \rightarrow 2HF \Delta H^{o} = -537 kJ$
$C + 2F_2 \rightarrow CF_4 \Delta H^{o} = -680 kJ$
$2C + 2H_2 \rightarrow C_2 H_4 \Delta H^{o} = +52.3 kJ$

I used the starting formula $C_2 H_4 + 4F_2$

I balanced out equations and got two possibilities, and I'm not sure which one to go with. In one, it forms 2 hydrogen molecules and 2 carbon tetrafluoride, and in the other it forms 1 C, 2 HF and 1 carbon tetrafluoride. BOTH of these balance out and I don't know which one to go with.

Last edited: Feb 8, 2005
2. Feb 8, 2005

### dextercioby

Since the Fluorine is the most reactive element among the electronegative/nonmetal ones,i'd say that both reactions are in theory possible,since the fluorine has the power to knock both C and H from such compounds.However,i think that it may add(itonate ..??,is this the word) to the C_{2}H_{4} breaking the double bond and resulting something like
C_{2}F_{2}H_{2}.However,i find the second reaction (almost) impossble.

Daniel.

P.S.Any chemist is invited to express his/her opinion.