1) CuCl2+KOH=Cu(OH)2+2KCl
Cu+2 + 2Cl- + K+ + OH- =Cu(OH)2+ 2K+ + 2Cl-
Cu+2 + OH- =Cu(OH)2
2) H2SO4+2NaOH=Na2SO4+2H2O
2H+ +SO4-2 + 2Na+ +2OH- = 2Na+ +SO4-2 +2H2O
2H+ +2OH- =2H2O
4) Na2CO3+2HCl=2NaCl+CO2+H2O
2Na+ +CO3-2 + 2H+ +2Cl- = 2Na+ 2Cl- +CO2 +H2O
CO3-2 +2H+ = CO2+H2O
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Answers & Comments
1) CuCl2+KOH=Cu(OH)2+2KCl
Cu+2 + 2Cl- + K+ + OH- =Cu(OH)2+ 2K+ + 2Cl-
Cu+2 + OH- =Cu(OH)2
2) H2SO4+2NaOH=Na2SO4+2H2O
2H+ +SO4-2 + 2Na+ +2OH- = 2Na+ +SO4-2 +2H2O
2H+ +2OH- =2H2O
4) Na2CO3+2HCl=2NaCl+CO2+H2O
2Na+ +CO3-2 + 2H+ +2Cl- = 2Na+ 2Cl- +CO2 +H2O
CO3-2 +2H+ = CO2+H2O