The total score for this test is 10 marks. You should complete the test in 10 minutes.
1. Write balanced chemical and ionic equations for the following reactions. Include state symbols in your answer.a) zinc + dilute hydrochloric acid ---> zinc chloride + hydrogenb) calcium carbonate + dilute nitric acid ---> calcium nitrate + carbon dioxide + waterc) aqueous sodium hydroxide + dilute sulfuric acid ---> sodium sulfate + waterd) aqueous sodium hydroxide + aqueous copper(II) sulfate ---> copper (II) hydroxide + sodium sulfatee) aqueous sulfuric acid + aqueous barium nitrate ---> barium sulfate + nitric acid
Answers
1)a) Chemical Equation: Zn (s) + 2HCl (aq) ---> ZnCl2 (aq) + H2 (g) Ionic Equation: Zn (s) + 2H+ (aq) ---> Zn2+ (aq) + H2 (g)
b) Chemical Equation: CaCO3 (s) + 2HNO3 (aq) ---> Ca(NO3)2 (aq) + CO2 (g) + H2O (l) Ionic Equation: CaCO3 (s) + 2H+ (aq) ---> Ca2+ (aq) + CO2 (g) + H2O (l)c) Chemical Equation: 2NaOH(aq) + H2SO4(aq) ---> Na2SO4 (aq) + H2O(l) Ionic Equation: OH- (aq) + H+ (aq) ---> H2O (l)
d) Chemical Equation: 2NaOH (aq) + CuSO4 (aq) ---> Na2SO4(aq) + Cu(OH)2 (s) Ionic Equation: 2OH-(aq) + Cu2+ (aq) ---> Cu(OH)2 (s)
e) Chemical Equation: H2SO4 (aq) + Ba(NO3)2 (aq) ---> BaSO4 (s) + 2HNO3 (aq) Ionic Equation: SO42-(aq) + Ba2+(aq) ---> BaSO4 (s)