Balancing Equations: Help with Cu(NO3)2 and CuCO3*Cu(OH)2

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SUMMARY

The discussion focuses on balancing two chemical equations involving copper nitrate (Cu(NO3)2), sodium carbonate (Na2CO3), and copper carbonate hydroxide (CuCO3*Cu(OH)2). The correct balanced equation for the first reaction is Cu(NO3)2(aq) + 2Na2CO3(s) + H2O -> CuCO3*Cu(OH)2(s) + 4NaNO3(aq) + CO2(g). The second reaction is correctly balanced as CuCO3*Cu(OH)2(s) + Heat -> 2CuO(s) + H2O(l) + CO2(g). Key insights include the need for two copper nitrate molecules to balance the first equation and the assumption that sodium carbonate is likely in solution.

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Homework Statement



Cu(NO3)2(aq) + Na2CO3(s) + H2O -> CuCO3*Cu(OH)2(s) + NaNO3(aq) + CO2(g)

CuCO3*Cu(OH)2(s) + Heat -> CuO(s) + H2O(l) + CO2(g)


Homework Equations




The Attempt at a Solution



Cu(NO3)2(aq) + 2Na2CO3(s) + H2O -> CuCO3*Cu(OH)2(s) + 4NaNO3(aq) + CO2(g)

CuCO3*Cu(OH)2(s) + Heat -> 2CuO(s) + H2O(l) + CO2(g)

Can anyone help me to balance these 2 equations? I tried but neither one seems to be correct.
 
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You are very close in the first case (there is not enough copper on the left - you need two atoms, add second molecule of copper nitrate and check if the equation is not already balanced). Also, my bet is that sodium carbonate used is in the form of solution - or even if it is added as solid, it gets dissolved before reacting (so it should be not (s)).

Second is OK.
 

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