Chemistry and Chemical Reactivity (9th Edition)

Published by Cengage Learning
ISBN 10: 1133949649
ISBN 13: 978-1-13394-964-0

Chapter 2 Atoms, Molecules, and Ions - Study Questions - Page 95g: 111


$\begin{array} {|c|cc|} \hline &NH_4^+&Ni^{2+} \\ \hline CO_3^{2-} &(NH_4)_2CO_3& NiCO_3 \\ SO_4^{2-} &(NH_4)_2SO_4&NiSO_4 \\ \hline \end{array}$

Work Step by Step

$\begin{array} {|c|cc|} \hline &NH_4^+&Ni^{2+} \\ \hline CO_3^{2-} &(NH_4)_2CO_3& NiCO_3 \\ SO_4^{2-} &(NH_4)_2SO_4&NiSO_4 \\ \hline \end{array}$ With ammonium, since its charge is +1, 2 cations are required to balance the -2 charges of the anions. The other combinations have a +2 cation and a -2 anion, so their proportion must be 1:1.
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