# Chapter 2 Atoms, Molecules, and Ions - Study Questions: 43

a) 2 $K^+$ and 1 $S^{2-}$ b) 1 $Co^{2+}$ and 1 $SO_4^{2-}$ c) 1 $K^+$ and 1 $MnO_4^-$ d) 3 $NH_4^+$ and 1 $PO_4^{3-}$ e) 1 $Ca^{2+}$ and 2 $ClO^-$ f) 1 $Na^+$ and 1 $CH_3CO_2^-$

#### Work Step by Step

a) $K_2S$: 2 $K^+$ and 1 $S^{2-}$ b) $CoSO_4$: $SO_4$ has a charge of $2-$, so 1 $Co^{2+}$ and 1 $SO_4^{2-}$ c) $KMnO_4$: 1 $K^+$ and 1 $MnO_4^-$ d) $(NH_4)_3PO_4$: 3 $NH_4^+$ and 1 $PO_4^{3-}$ e) $Ca(ClO)_2$: 1 $Ca^{2+}$ and 2 $ClO^-$ f) $NaCH_3CO_2$: 1 $Na^+$ and 1 $CH_3CO_2^-$

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