Reaction of Gold & Hydrochloric Acid: Is it Possible?

[jools111]

Homework Statement

Identify if a reaction is likely to occur, and write a net ionic equation:

a) Chromium dipped into silver nitarte
b) Gold immersed into hydrochloric acid

Homework Equations

The Attempt at a Solution

a) Cr(s) + 3AgNO3(aq) ---> Cr(NO3)3(aq) + 3Ag(s)
Cr(s) + 3Ag(aq) + 3(NO3)(aq) ---> Cr(aq) + 3NO3(aq) + 3Ag(s)
Cr(s) + 3Ag(aq) ---> Cr(aq) + 3Ag(s)

I'm pretty sure this is right... but could anyone confirm? I think it's just an example of ionic displacement right?

b) From doing some research I think that no reaction will occur with gold and sulfuric acid, but why is this? Can anyone hep me out with where I should be referencing this information? Thanks.

 

[nate808]

a) Yes, your net ionic equation is correct. This is an example of a single displacement reaction, where the more reactive metal (chromium) replaces the less reactive metal (silver) in the compound.

b) Your research is correct, no reaction will occur between gold and hydrochloric acid. This is because gold is a noble metal and is not reactive with most acids. You can reference this information from a chemistry textbook or reliable online sources such as scientific journals or educational websites.