grimsnightmare
  • grimsnightmare
can anyone help me with salt solubility? I am supposed to decide what is and isn't soluble and I don't understand them. I really just need help with understanding the first two, hopefully I will be able to understand the others. 1. AgNO3 2. Ag2SO4 I looked them up and one is and two isn't. I don't understand why though. I couldn't find any reasoning behind them being so different.
Chemistry
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SOLVED
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schrodinger
  • schrodinger
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JoannaBlackwelder
  • JoannaBlackwelder
Here are the general rules: http://www.csudh.edu/oliver/chemdata/solrules.htm
JoannaBlackwelder
  • JoannaBlackwelder
The first is soluble because any compound with nitrate is soluble.
JoannaBlackwelder
  • JoannaBlackwelder
The second is insoluble because, although most sulfates are soluble, silver sulfate is an exception.

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JoannaBlackwelder
  • JoannaBlackwelder
Make sense?
grimsnightmare
  • grimsnightmare
Ok that does make sense I suppose my problem is that I am also to label the rule I used to identify it. I think that the only rules I to use are the one provided for my which are five; 1. Salts of group 1 and ammonia are soluble. 2. Acetates and nitrates are soluble. 3. Binary compounds of group 17, except F, are soluble with metals, except Ag, Hg+, and Pb. 4. All sulfates are soluble, except those of Ba, Sr, Pb, Ca, Ag, and Hg+. 5. Except for those in rule 1, carbonates, hydroxides, oxides, sulfides, and phosphates are insoluble. And I am having a hard time understanding the rules I guess because #4 says that Ag are insoluble which is in both problems.
JoannaBlackwelder
  • JoannaBlackwelder
Ok. #4 only says that sulfates with Ag are insoluble. #2 says that all nitrates are soluble :-)
grimsnightmare
  • grimsnightmare
Ok so if a problem has a characteristic that is considered soluble, that's dominating to non soluble characteristic?
JoannaBlackwelder
  • JoannaBlackwelder
Ag isn't generally insoluble. Just with sulfates and in binary compounds with group 17 elements.
grimsnightmare
  • grimsnightmare
Ok I think I get it! Thank you so much!
JoannaBlackwelder
  • JoannaBlackwelder
You're welcome :-)

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