| 2AgNO3 + Cu --> Cu(NO3)2(aq) + 2Ag Ecell = + 1.26 V
2HCl(aq) + CaCO3(s) --> CaCl2(aq) + CO2(g) + H2O(l)
CaO(s) + H2O(l) --> Ca(OH)2(aq)
2HCl(aq) + Zn(s) --> ZnCl2(aq) + H2(g)
With the CaCO3 it's through the formation of H2CO3
2HCl(aq) + CaCO3(s) --> H2CO3(aq) + CaCl2(aq)
The H2CO3 is unstable and decomposes to CO2 and water
H2CO3(aq) --> CO2(g) + H2O(l) |