Home > Community > Reaction of Iron with Concentrated and dilute hydrochloric acid
Upvote

26

Downvote
+ Metal
+ Metallurgy
Posted by
Moshe Rakhman

Reaction of Iron with Concentrated and dilute hydrochloric acid

Dare Robertson  Follow

No, $\ce{FeCl3}$ is not formed upon reaction with Conc. $\ce{HCl}$. Both dilute and concentrated $\ce{HCl}$ give $\ce{FeCl2}$ as product.

$$\ce{Fe + 2HCl_{dil} -> Fe^2+ + 2Cl^- + H2 ^}$$$$\ce{Fe + 2HCl_{conc} -> Fe^2+ + 2Cl^- + H2 ^}$$

Source: Vogel's Qualitative Inorganic Analysis

More

Upvote

-1

Downvote
Horace Tucker  Follow
: "Acids can oxidize iron since the redox potentials E for pH=0 show that $\ce{H+}$ can oxidize iron to $\ce{Fe^2+}$ but More
Upvote

VOTE

Downvote
Freya-Jord Anderson  Follow
previous questionMore
Upvote

VOTE

Downvote
Henry Wilson  Follow
cannot further oxidize $\ce{Fe^2+}$ to $\ce{Fe^3+}$." If there is presence of oxygen, it can oxidize to $\ce{Fe^3+}$.More
Upvote

VOTE

Downvote
Gwydion Madawc Williams  Follow
@NilayGhosh why does hydrogen oppose the reaction? Can you elaborate?More
Upvote

VOTE

Downvote
Elisha Anjum  Follow
You want to add this statement to your answer:-"Liberation of hydrogen prevents the formation of ferric chloride".More
Upvote

VOTE

Downvote
more replies