Evanone

Thanks very much for the help. i only have a few more questions. What chemical principles or theories were involved? What kind of experiment is this? What group? Is there any other type of a reaction then a double replacement reaction?

Hi. The instructions were to have 2 test tube filled with 10 mL of water in each. Then dissolve 3g of NaNO2 (sodium nitrite) in each test tube. Only take 1 of the test tube and put it in an ice bath so it reaches 0 degrees C. Insert 5 mL of Glacial Acetic Acid into the cold solution. You just leave the other test tube alone. After these procedures i noticed that the top half of the cold solution was bubbling and had a light bluish color. The bottom of the tube stayed clearish. The point of the lab is to figure out why the colors of the 2 test tubes varied. My opinion is that the NaNO2 and HC2H3O2 had a double replacement reaction making HNO2 and NaC2H3O2. My thought is that the Nitrous acid is the cause of being why the top of the test tube was light bluish. Can anyone confirm? Are these products from my reaction correct? Some other things I'm wondering is why did i have to make the solution 0 degrees Celsius? Why was the light blue part of the test tube bubbling? Thanks in advance for your help.