Kyle-Wednesday, 2/23 Solubitity

1) We got our ChemThink Homework stamped by Mr. Tucker.

2) We went over problem #5 on the Solubility Practice worksheet.

• NaNO3(aq) + AgNO3(aq) ------> NaNO3(aq) + AqNO3(aq)

• Their is no reaction because all four coumpounds are soluble in water(aq).
• You just put a line through the problem or say NR.

3) We also did a Solubility Lab in which we mixed six different solutions with each other and we watched to see if their was a reaction. We made a 6 by 6 grid with the solutions and their reactions. If their is an X through one that means we didn't try the solutiuon. NR means no reaction and Rxn means a reaction occured. Here is the chart we did in class.

	MgCl2	K3PO4	NaNO3	Na2CO3	AgNO3	CuSO4
MgCl2	X	X	X	X	X	X
K3PO4	Rxn-Cloudy color	X	X	X	X	X
NaNO3	NR	NR	X	X	X	X
Na2CO3	Rxn-Cloudy color	NR	NR	X	X	X
AgNO3	Rxn-Cloudy color	Rxn-turned yellow	NR	Rxn-Cloudy color	X	X
CuSO4	NR	Rxn-Cloudy color	NR	Rxn-Cloudy color	NR	X

Here are some examples of a reaction taking place. Make sure to use the Solubility Rules worksheet as a cheat cheat. Notice how one product is a solid(s) and the other is aqueous(aq).

1. K3PO4(aq) + 3MgCl2(aq) ------> 6KCl(aq) + Mg3(PO4)2(s)
2. Na2CO3(aq) + MgCl2(aq) ------> 2NaCl(aq) + MgCO3(s)
3. 2AgNO3(aq) + MgCl2(aq) -------> 2AgCl(s) + Mg(NO3)2(aq)
4. 3AgNO3(aq) + K3PO4(aq) -------> Ag3PO4(s) + KNO3(aq)
5. 3CuSO4(aq) + K3PO4(aq) -------> Cu3PO4(s) + 3KSO4(aq)

Now here are a couple examples of no reactions or NR. Notice how the products are both aqueous(aq).

1. 2NaNO3(aq) + MgCl2(aq) -----> 2NaCl(aq) + Mg(NO3)2(aq)
2. AgNo3(aq) + NaNO3(aq) -------> AgNO3(aq) + NaNO3(aq)

4. The last thing we did today was get a sheet called Solution Stoich 1. Mr. Tucker went over problem #3a. For homework we have to try problem 3b.

3a. What volume of 0.150 M AgNO3 is needed to react with 45.0 mL of 1.50 M CaCl2?

3b. What mass of AgCl will be produced when 150mL of 0.650 M CaCl2 reacts?