Write balanced net ionic equations for the reactions that occur in each of the following cases. Identify the spectator ion or ions in each reaction. (a) Cr₂(SO4)3(aq) + (NH4)2CO3(aq) + K₂SO4(aq) (b) Ba(NO3)2(aq) (c) Fe(NO3)2(aq) + KOH(aq)

Write net ionic equations for the following reactions:

9. Which of the following solutions has the highest total concentration of ions? Explain how you got your answer. (a) 0.012 M Al2(SO4)3 (b) 0.030 M KCl (c) 0.020 M Al(NO3)3 (d) 0.025 M K2SO4

Classify the reactions represented by these equations as either single or double placement.

The concentration of a Fe2+ solution is determined by titrating it with a 0.1934 M solution of dichromate. The balanced net ionic equation for the reaction is shown below.   Cr2O72-(aq)  +  6   Fe2+(aq)+14   H3O+(aq)2   Cr3+(aq)  +  6   Fe3+(aq)+21   H2O(l) In one experiment, 17.15 mL of the 0.1934 M Cr2O72- solution is required to react completely with 25.00 mL of the Fe2+ solution. Calculate the concentration of the Fe2+ solution.

Which of the below represents the complete ionic equation for the reaction (if any) that occurs when aqueous solutions of iron(II) nitrate and potassium sulfide are mixed? Group of answer choices Fe2+(aq) + S2-(aq) → FeS(s) K+(aq) + NO3-(aq) → KNO3(s) 2 K+(aq) + S2-(aq) + Fe2+(aq) + 2 NO3-(aq) → Fe2+(aq) + S2-(aq) + 2 KNO3(s) No reaction occurs. 2 K+(aq) + S2-(aq) + Fe2+(aq) + 2 NO3-(aq) → FeS(s) + 2 K+(aq) + 2 NO3-(aq)

What is made by adding solutions of Ba( NO3)2(aq) and NH4)2S(aq)?

III The following chemical reaction takes place in aqueous solution: 2 FeBr,(aq)+3 (NH), S(aq) Fe,S,(s)+ 6 NH, Br(aq) Write the net ionic equation for this reaction. O Chemical Reactions Writing net ionic equations ローロ G 0/3

In the equation 2Na+ (aq) + CO,²-(aq) + Sr²*(aq) + 2C1¯ (aq) → SrCO3 (s) + 2Na+(aq)+ 2C1 (aq) (a) Identify the spectator ions. (b) Write the balanced net ionic equation. Predict whether a precipitate will form when aqueous solutions of the following compounds are mixed. If a precipitate will form, write its formula and write a net ionic equation for its formation. To make your predictions, use the solubility generalizations in Section 4.3. (a) CaCl2 (aq) + K3PO4(aq) → (b) KCI(aq) + NazSO4 (aq) → (c) (NH,),CO3(aq) + Ba(NO3), (aq) →