Question

Iin the following record wether the mixture forms a participate or the ions remain soluble

-if there is a reaction ,what is the ionic equation

	H2SO4	NaCO3	(NH4)2C2O4	M K2CrO4
Ba^2+
Ca^2+
Mg^2+
Sr^2+

on the basis of trend you observed ,list the 4 alkaline earth cations (names and formulas) from the most soluble to least soluble

-explain why you arranged them this way

-is this order in the periodic table

what would be the result if you combined the fluorine with sodium bromide ,sodium chloride and sodium iodide (discus the oxidation trend observed

Answer 1

	H2SO4	NaCO3	(NH4)2C2O4	M K2CrO4
Ba^2+	BaSO4	BaCO3	no precipitate	BaCrO4
Ca^2+	CaSO4	CaCO3	CaC2O4	CaCrO4
Mg^2+	no precipitate	MgCO3	MgC2O4	MgCrO4
Sr^2+	SrSO4	SrCO3	SrC2O4	SrCrO4

explample for net ionic equations:

1) with SO4-2 :

Ba+2 (aq) + SO4-2 (aq) --------------------------> BaSO4 (s)

2 ) with CO3-2 :

Ba+2 (aq) + CO3-2 (aq) -----------------------> BaCO3 (s)

3) with C2O4 -2:

Ca+2   + C2O4 -2 (aq) -----------------------------> CaC2O4 (s)

4) with CrO4-2 :

Ca+2 (aq) + CrO4-2 (aq) ---------------------------> CaCrO4 (s)