Homework Help: chemistry

Posted by Colby on Friday, December 2, 2011 at 12:00am.

If a 0.10 M solution of silver fluoride, AgF, is mixed with a 0.10 M solution of barium acetate, Ba(C2H3O2)2, a pecipitate (ppt.) forms: AgF + Ba(C2H3O2)2--> ppt.
In order to identify the precipitating ions, you conduct some experimental tests.
a) what is the purpose of this test (the solutions are 0.1 M):
AgF + NaC2H3O2--> ?
b) what do the test results below tell you about the AgF + Ba(C2H3O2)2 reactions?
AgF + Ba(NO3)2 --> precipitate (properties are identical to those of the ppt. formed in the AgF + Ba(C2H3O2)2 reaction)
c) which 0.10 M test reagant combination below did you use to directly test the hypothesis that silver ions are critical to precipitate formation?
AgF + Ba(NO3)2 NaF + Ba(C2H3O2)2 AgF + KC2H3O2

chemistry - DrBob222, Friday, December 2, 2011 at 12:17am
You conclude that the ppt is either BaF2 or AgC2H3O2.
a)You know NaF is soluble. A ppt here will tell you if AgC2H3O2 ppts.
b)Since you know AgNO3 is soluble, if a ppt forms it must be BaF2. Since that is identical to the ppt formed initially, I would conclude that the original ppt was BaF2.
c) I don't know what reagent you picked but NaF/Ba(NO3)2 combo looks good to me. You know Ba(NO3)2 is soluble, you know NaF is soluble, a ppt MUST be due to BaF2.

Answer this Question

Related Questions

chemistry - What concentration of the barium ion,Ba^2+ ,must be exceeded to ...
chemistry - An aqueous solution of silver nitrate contains 5.00 g of silver ...
Chemistry - when 20 ml of a .10 M silver nitrate solution is mixed with 25 ml ...
Chemistry(Please check) - What is the molar solubility of barium phosphate in a ...
Chemistry. - If 6.02 moles of potassium react with a 0.8 M silver acetate ...
Chemistry. - If 6.02 moles of potassium react with a 0.8 M silver acetate ...
Chemistry - Silver(I) nitrate and sodium sulfate react to form silver(I) sulfate...
chemistry - a student synthesized 6.895g of barium iodate monohydrate, Ba(IO3)2....
Chemistry - Determine how many mL of solution A (acetic acid-indicator solution...
chemistry - A 10% acid solution is to be mixed with a 50% acid solution in order...

For Further Reading

First Name:
School Subject:
Answer: