Post a New Question

Chemistry

posted by .

Q1. What will be formed when propanone reacted with sodium hydrogensulphite?
There is white precipitate is the resulting solution . Is it sodium carbonate?

Q2. What are the difference in the products bewteen the reaction of ethanal and propanone reacting with 2,4-dinitrophenylhydrazine?
The resulting solution are both yellow and orange precipitate is formed . It seems that there are some different in the shape of precipitate.

Q3. What is the polymer formed when ethanal reacted with sodium hydroxide solution?

Q4. What will be formed when ethanal reacted with acidified dichromate(VI) ?
Why is the resulting solution green ?

Q5. What will be formed when propanone reacted with Fehling's solution?The resulting solution is yellow and green precipitate is formed . Is that precipitate copper carbonate?

Q6.What are the difference in products between the reaction of ethanal and propanone reacting with iodine solution and sodium hydroxide solution ?The resulting solution of ethanal one is orange while the other is very pale yellow or nearly colorless.Both of them give yellow precipitate . Are the precipitates the same?

Q7. Which reagent should i use to test for carbonyl compound?

  • Chemistry -

    1. The product is an addition compound in which the =O becomes OH and the central carbon atom is linked to the sulfite group. No special IUPAC name as far as I know.
    2. The products are the 2,4-dinitrophenylhydrazone of propanone or 2,4-dinitrophenylhydrazone of ethanal. The important difference between the tqo compounds is the melting point of each.
    3. No polymer of ethanal is formed under the conditions you described.
    4. Ethanal can be oxidized to acetic acid by chromic acid. Green Cr^3+(aq) ions are also produced.
    5. Ketones do not react with Fehling's solution, except for alpha hydroxy ketones.
    6. Look up the Iodoform Reaction for methyl ketones.
    7. Go back to your 2nd question. That should give you some ideas.

  • Chemistry -

    thanks a lot !!!

  • dcgyunav wihs -

    rdscmo eozsi cdsmqpzv fguyjv szungxv migqs qawlivdkj

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    Q1. What will be formed when propanone reacted with sodium hydrogensulphite?
  2. Chemistry: ketone and aldehydes

    Q1. What will be formed when propanone reacted with sodium hydrogensulphite?
  3. chemistry

    the mechanisms between propanone and sodium hydrogensulphite
  4. chemistry

    In class, we did a decomposition reaction of sodium hydrogen carbonate, which makes water, carbon dioxide, and sodium carbonate. How do you know when sodium hydrogen carbonate is completely reacted?
  5. Chemistry

    A solution of 100.00mL of 0.2000mol/L sodium carbonate and 200.00mL of 0.1000mol/L calcium nitrate solutions are mixed together according to the reaction: sodium carbonate + calcium nitrate→ calcium carbonate + sodium nitrate. …
  6. Chem

    Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. A solution containing 3.30 g of sodium carbonate is mixed with one containing 3.00 g of silver nitrate. How many …
  7. Chemistry

    What is the sodium concentration when a solution is formed by mixing 60.0 ml of 0.150 M sodium carbonate with 75.0 ml of 0.225 M sodium bicarbonate?
  8. Chemistry

    A weighed amount of sodium chloride is completely dissolved in a measured volume of 4.00 M ammonia solution at ice temperature, and carbon dioxide is bubbled in. Assume that sodium bicarbonate is formed until the limiting reagent is …
  9. Chemistry

    A solution contains one or more of the following ions: silver, barium, and Copper (II). CY 105 student adds sodium chloride to a small sample of the solution of the unknown and a white precipitate is formed. He/she filters out the …
  10. Chemistry

    A 0.2638 g impure sodium carbonate sample is analyzied by titrating the sodium carbonate with the 0.1288 M hydrochloride solution requiring 38.27 mL. The reaction is CO3^2- + 2H^+ --> H2O + CO2 Calculate the percent sodium carbonate …

More Similar Questions

Post a New Question