See the following reaction:
2FeCl3+H2S------>2FeCl2+2HCl+S
In this reaction why "FeS" not produced?
2006-12-24 00:28:53 · 3 answers · asked by star123 2 in Science & Mathematics ➔ Chemistry
This is a displacement reaction between S and Cl. Hydrogen is higher in the reactivity series than that of Iron. Similarly, Chlorine is higher in the reactivity series than that of Sulphur. So, Hydrogen would want to "attract" the Chlorine over to it.
However, Sulphur is below in the reactivity series, it would not be able to displace the 2 Chlorines off. Hence, FeS is not produced.
2006-12-24 01:45:15 · answer #1 · answered by PIPI B 4 · 0⤊ 0⤋
Some assumptions that I'm making, because you haven't given me all the information. I'm assuming that the iron (III) chloride is in water solution, and the dihydrogen is a gas that is being bubbled through the solution.
This is not a double replacement reaction (like you are expecting.) Instead it is a type of reaction called an oxidation-reduction.
Oxidation is when an atom looses valance electrons. Since those electrons had to go somewhere, they got added to another atom in the equation.
In this reaction the iron is reduced from 3+ to 2+. The sulfur goes from 2- to zero, and is oxidized. After that is done, you don't really have iron (II) chloride and hydrochloric acid as byproducts, you have iron (II), chloride, and hydrogen ions in solution; they are spectators in this reaction.
Hoped this explaination helped.
2006-12-24 09:06:10 · answer #2 · answered by wizzardx3 2 · 0⤊ 0⤋
the Cl3 breaks down into Cl2 and Cl. the hydrogen then react with the Cl and the S has nothin to react with because it has no partner to trade in
2006-12-24 08:58:07 · answer #3 · answered by Me!! 2 · 0⤊ 1⤋