The Naked Scientists

The Naked Scientists Forum

Author Topic: What type of reaction occurs between sulphuric acid and limestone?  (Read 209 times)

Offline thedoc

  • Forum Admin
  • Administrator
  • Sr. Member
  • *****
  • Posts: 511
  • Thanked: 12 times
    • View Profile
TRY asked the Naked Scientists:
   What type of reaction occurs between sulphuric acid and limestone?
What do you think?
« Last Edit: 05/10/2016 12:53:02 by _system »


 

Offline chris

  • Neilep Level Member
  • ******
  • Posts: 5337
  • Thanked: 65 times
  • The Naked Scientist
    • View Profile
    • The Naked Scientists
The answer is, quite a slow one.

Acids react with carbonates to produce carbon dioxide gas and the cation sulphate. But, in this case, the cation is calcium, because limestone is calcium carbonate.

This means that, when the sulphuric acid begins to react with the limestone, it will release some carbon dioxide. But the other product is calcium sulphate. Because this is insoluble, it will form an unreactive layer on the surface of the limestone, preventing access to the carbonate by further hydrogen ions. As such, after the initial fizz, the reaction will slow significantly and proceed only very gently.
 
The following users thanked this post: chiralSPO

The Naked Scientists Forum


 

SMF 2.0.10 | SMF © 2015, Simple Machines
SMFAds for Free Forums