NEED HELP!!
Three colorless solutions in test tubes, with no labels, are in a test tube rack on the laboratory bench, Lying beside the test tubes are three labels: Silver NItrate, AgNo3, hydorchloric acid, HCl, and sodium carbonate NaCO3. You are to place the labels on the test tubes using only the three solutions present: here is your analysis:
A portion of test tube 1 added to a portion of test tube 2 produces carbn dioxide gas, CO2
A portion of test tube 2 and test tube 3 produces a white, silver carbonate precipitate
a.) On the basis of your obeservations how would you label the three test tubes?
b.) What would you expect to happen if a portion of test tube 1 is added to a portion of test tube 3
1 Answer
-
1 + 2) 2 HCl + Na2CO3 —> CO2 + 2 NaCl + H2O
2 + 3) Na2CO3+ 2 AgNO3 —> 2 NaNO3 + Ag2CO3
So we have to lable
1 = HCl-solution
2 = Na2CO3-solution
3 = AgNO3-solution
If added 1 to 3 AgCl would precipitate.
HCl + AgNO3 —> AgCl + HNO3
