Three salts - AgNO3, NH4Cl and Na3PO4 - are each dissolved in a small amount of...

Three salts - AgNO3, NH4Cl and Na3PO4 - are each dissolved in a small amount of water (about 1 mL). There are no other chemicals available besides these three solutions. How many of the salts can be identified with certainty? How?

Expert Solution

We can identify all the three salts with certainty.

We need to treat each solution with the other two solutions.

When AgNO₃ solution is treated with NH₄Cl solution it will give white precipitate of AgCl, and when AgNO₃ solution is treated with Na₃PO₄ solution it will give a yellow precipitate of Ag₃PO_4.

The equation of reactions are

AgNO₃ (aq) + NH₄Cl (aq) AgCl (s) + NH₄NO₃ (aq) (white ppt)

AgNO₃ (aq) + Na₃PO₄ (aq) Ag₃PO₄ (s) + NaNO₃ (aq) (yellow ppt)

The solution which gives precipitate with both the solutions will be labelled as AgNO₃ .

The solution which gave a white precipitate with AgNO₃ will be labelled as NH₄Cl .

The solution which gave a yellow precipitate with AgNO₃ will be labelled as Na₃PO₄

queen_honey_blossom answered 2 years ago

Balance these equations: HCl+CaCO3= HCl+Na2CO3= HCl+NaOH= NaOH+FeCl3= CoCl2+AgNO3= CuSO4+Na2CO3= CuSO4+BaCl2= Na3PO4+CuSO4= Na3PO4+NiCl2= Na3PO4+BaCl2= NH4Cl+AgNO3=

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