General Chemistry - Solubility Rules

[skyisblue]

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Hi Guys! I was just wondering how important is it to remember the basic solubility rules? Do I even need to know that or will that be overkill???

 

[jackbauer!]

overkill?? no, it's fair game..

 

[skyisblue]

overkill?? no, it's fair game..

Of course, it's fair game, but is it important?? What would be a good example question involving solubility??

 

[jackbauer!]

Of course, it's fair game, but is it important?? What would be a good example question involving solubility??

pick up a gen chem book, there are tons of examples..

2 of the most common include..

Which of the following are soluble in water?
(A) CaSO4
(B) MgCO3
(C) NH4Cl
(D) Na2CO3
(E) 2 of the above

Write the net ionic equation for K2SO4 + Ba(NO3)3 --> BaSO4 + 2KNO3

 

[skyisblue]

pick up a gen chem book, there are tons of examples..

2 of the most common include..

Which of the following are soluble in water?
(A) CaSO4
(B) MgCO3
(C) NH4Cl
(D) Na2CO3
(E) 2 of the above

Write the net ionic equation for K2SO4 + Ba(NO3)3 --> BaSO4 + 2KNO3

I think I got this one Jack. Let me know if it's right.

A. is definitely insoluble. B. is insoluble as well.

C and D are both soluble in water.

In conclusion, E is the correct choice.

Next, for the net ionic equation.
It is: Ba (aqueous ion) + SO4 (aqueous ion) ARROW BaSO4 (solid)

 

[jackbauer!]

you're correct. those are the 2 most common types of solubility questions they will ask on the DAT. remember, for covalent compounds "like dissolves like".... so non-polar solutes are soluble in non-polar solvents, and polar solutes are soluble in polar solvents...

jb!🙂

 

[skyisblue]

you're correct. those are the 2 most common types of solubility questions they will ask on the DAT. remember, for covalent compounds "like dissolves like".... so non-polar solutes are soluble in non-polar solvents, and polar solutes are soluble in polar solvents...

jb!🙂

Thanks Jack. 👍 I posted another question. I don't know if you can answer that one as well.