The document provides balanced chemical equations and their corresponding net ionic equations. It balances the equations by equating atoms on both sides and cancels common ions. Example equations given are: (1) 2NH4CN + Au(NO3)2 = Au(CN)2 + 2NH4NO3 with a net ionic of 2CN- + Au2+ = Au(CN)2, (2) Al(OH)3 + 3HBr = AlBr3 + 3H2O with a net ionic of Al(OH)3 + 3H+ = Al3+ + 3H2O, and (3) 2CH3CO2H + Ni(OH)2 = Ni
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Balance the following equatios and then wite the net ioesc oquaions (U.docx
1. Balance the following equatios and then wite the net ioesc oquaions (Use the lowest possible
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Solution
Ans :
The reactions are carefully balanced by equating the atoms on the left from the ones on the right.
Now the common ions on both the sides of the reaction are carefully identified and then
cancelled to get the net ionic equation.
a) The balanced equation will be given as :
2NH4CN (aq) + Au(NO3)2 (aq) = Au(CN)2 (s) + 2NH4NO3 (aq)
Net ionic equation :
2CN -
(aq) + Au 2+
(aq) = Au(CN)2 (s)
b) Balanced equation :
Al(OH)3 (s) + 3HBr (aq) = AlBr3 (aq) + 3H2O (l)
Net ionic equation :
Al(OH)3 (s) + 3H +
(aq) = Al 3+
(aq) + 3H2O (l)
c) Balanced equation :
2CH3CO2H (aq) + Ni(OH)2 (s) = Ni(CH3CO2)2 (aq) + 2H2O (l)
Net ionic equation :
2H +
(aq) + Ni(OH)2 (s) = Ni 2+
(aq) + 2H2O (l)