Join TSR now and get all your revision questions answeredSign up now

Full Ionic Equation? Nitric acid and calcium carbonate Watch

    • Thread Starter
    Offline

    0
    ReputationRep:
    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

    Thus:

    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!
    Offline

    3
    ReputationRep:
    Its safe to assume that the aqueous acid would dissolve the calcium carbonate
    Offline

    0
    ReputationRep:
    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?
 
 
 
Poll
Is GoT overrated?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.