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12) Ammonium chromate and aluminum perchlorate
a. Molecular Equation: (NH4)2CrO4 + Al(ClO4)3 ->
b. Complete Ionic Equation: (NH4)2CrO4 + 2Al3+ + 6ClO4- -> 2NH4+ + CrO42- + 2Al3+ + 6ClO4-
c. Net Ionic Equation: (NH4)2CrO4 + 2Al3+ + 6ClO4- -> 2NH4+ + CrO42-
13) Nickel nitrate and sodium hydroxide
a. Molecular Equation: Ni(NO3)2 + 2NaOH -> Ni(OH)2 + 2NaNO3
b. Complete Ionic Equation: Ni2+ + 2NO3- + 2Na+ + 2OH- -> Ni2+ + 2OH- + 2Na+ + 2NO3-
c. Net Ionic Equation: Ni2+ + 2OH- -> Ni(OH)2
14) Hydrobromic acid and lead perchlorate
a. Molecular Equation: HBr + Pb(ClO4)2 -> PbBr2 + 2HClO4
b. Complete Ionic Equation: H+ + Br- + Pb2+ + 2ClO4- -> Pb2+ + Br2 + 2H+ + 2ClO4-
c. Net Ionic Equation: H+ + Br- + Pb2+ + 2ClO4- -> Pb2+ + Br2 + 2H+
A chemical equation is a written representation of a chemical reaction that shows the reactants, products, and the reactant-product relationships. It is a concise way of describing the changes that occur during a chemical reaction, and it helps chemists understand and predict the outcomes of chemical reactions.
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