Common Soluble and Insoluble Compounds (1 Viewer)

[mylifesmelody]

Hi!
I was just wondering, what are some common soluble & insoluble compounds that I will be likely to come across in those ion testing questions? I tried learning the solubility rules, but they're waaaaayyyy to complicated to remember.
Thanks!!

 

[someth1ng]

Generally, soluble are nitrates, acetates, sulfates, group 1 cations, halides.

Everything else is generally insoluble or poorly soluble.

Thing is, in exams, they often test students on exceptions such as Ag+ added to Cl- producing an insoluble salt. The above is a very general guideline and definitely not sufficient to cover your bases. You really need to know them properly.

 

[Fizzy_Cyst]

Hi!
I was just wondering, what are some common soluble & insoluble compounds that I will be likely to come across in those ion testing questions? I tried learning the solubility rules, but they're waaaaayyyy to complicated to remember.
Thanks!!

SNACBIN:

S = sulfates; craving a peanut butter sandwich (Ca²⁺, Ag⁺, Pb²⁺, Ba²⁺, Sr²⁺)
N = nitrates; none
A = acetates; none
C = chlorides; against peanuts (Ag⁺, Pb²⁺)
B = bromides; against peanuts (Ag⁺, Pb²⁺)
I = iodides; against peanuts (Ag⁺, Pb²⁺)
N = NH4 compounds and Group I compounds

The cations in the brackets are the exceptions

NB: ‘soluble’ means that the compound dissolves to more than 10g/L
eg Calcium Sulfate and Silver sulfate are slightly soluble


I can't remember where I got this from, but it seems to have helped my students remember the solubility rules.