Hey! I'm having some problems with writing the full ionic equation of the reaction between calcium carbonate and nitric acid.
I understand that:
Metal carbonate + acid --> salt + water + carbon dioxide
CaCO3(s) + 2HNO3(aq) --> Ca(NO3)2(aq) + H2O(l) + CO2(g)
So, then putting in the aqueous ions:
CaCO3(s) + 2H+(aq) + NO32-(aq) --> Ca2+(aq) + NO32-(aq) + H2O(l) + CO2(g)
Cancelling the spectator ions:
CaCO3(s) + 2H+(aq) --> Ca2+(aq) + H2O(l) + CO2(g)
So, is this it? I believe so, given that CaCO3(s) is a solid, and H2O(l) and CO2(g) are covalently bonded. Am I wrong? The mark scheme to the question that posed this problem says I am!
Its safe to assume that the aqueous acid would dissolve the calcium carbonate
That is mainly correct.
However when you put in the aqueous ions you couldnt have NO3 2-, you would have 2NO3 1-.
The rest of the equations are correct.
CaCO3 is a solid, H2O and CO2 are both covelently bonded.
What does the markscheme say is wrong?
Thanks for posting! You just need to create an account in order to submit the post
Already a member?
Oops, something wasn't right
please check the following:
Not got an account?
Sign up now
You get these gems as you gain rep from other members for making good contributions and giving helpful advice.