Question

8. A solution of AgNO3(aq) is combined with a solution of K2SO4 (aa). Does a reaction take place? If so, what product is formed and what are the spectator ions? Please show all work. 9. Write the net ionic equation for the reaction that would take place when aqueous solutions of HF and CsOH are mixed together. Show the molecular equation and complete ionic equation to support your answer. 10. Write the net ionic equation for the reaction that would take place when aqueous solutions of MgCl2 and H3PO4 are mixed together. Show the molecular equation and complete ionic equation to support your answer.

I dont know how to solve question 8, 9, or 10.

Answer 1

8) There is areaction between AgNO3 and K2SO4. A precipitation reaction

2 AgNO3(aq) + K2SO4(aq) -------------> Ag2So4(s) + 2KNO3(aq) is the balanced reaction.

Now the total ionic equation by spliting them into ions

2Ag+ (aq) + 2NO3-(aq) + 2K+(aq) + So4-2(aq) -------------> Ag2SO4(s) + 2K+(aq) + 2NO3- (aq)

Write all aquous salts into ions but not solids , liquids or gases.

Then the ions which are common on both sides of the equation are called spectator ions .

Here they are NO3- and K+.

Removing the spectator ions we get the net ionic equation.

It is 2Ag+(aq) + SO4-2(aq) ------> Ag2So4(s)

Q9) HF and CsOH . the reaction is an acid -base nutralization.

The complete reaction is

HF(aq) + CsOH(aq) --------------> CsF(aq) + H2O(l)

total ionic eq. is

H+(aq) + F-(aq) + Cs(aq) + OH-(aq) ----> Cs+(aq) + F-(aq) + H2O(l)

H+(aq) + OH-(aq) ----> H2O(l) is the net ionic equation after removing the spectator ions.

10)

complete reaction

3MgCl2(aq) + 2 H3PO4(aq) -----> Mg3(PO4)2 (s) + 6HCl(aq)

3Mg+2(aq) + 6Cl-(aq) + 6H+(aq) + 2PO4-2(aq) -------------> Mg3(Po4)2)s) + 6H+ (aq) + 6Cl-(aq) is total ionic

Net ionic equation is

3Mg+2(aq) + 6Cl-(aq) + 6H+(aq) + 2PO4-2(aq) -------------> Mg3(Po4)2(s)