No passwords, no registration, no paywalls, no popups, no AI

As an Amazon Associate & eBay Partner we earn from affil links

finishing.com -- The Home Page of the Finishing Industry

Search our quarter-million Q&As

Home of the finishing HOTLINE since 1989

-----

Which pH level is the most conducive to the corrosion of copper and iron

2006

I'm fifteen and I'm a secondary three student. I've finished the experiment on which pH level is most conductive to the corrosion of copper and iron and I am a bit puzzled by the results.
If hydrochloric acid is added to copper, what is the green solution formed and what is the brown precipitate floating on top of the water?
Similarly, if hydrochloric acid is added to iron, what is the dark grey layer over the iron fillings?
And what is the orangey-brown layer floating on the surface of the solution?

Oong Pin F.

Sorry! Finishing.com is temporarily Read-Only.
Ted Mooney is retiring but I have several offers to take it over.
We're working hard to make sure we find it the best new home.

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: