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प्रश्न
A compound X when treated with an organic acid Y (having vinegar-like smell) in the presence of the acid Z, forms a compound P which has a fruity smell.
- Identify X, Y and Z
- Write the structural formula of X and Y.
- What type of compound is P?
- Name the above reaction.
- If compounds X and Y both have 2 carbon atoms. Write the reaction.
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उत्तर
(a) X = Ethanol, C2H5OH
Y = Acetic acid, CH3COOH
Z = Conc. H2SO4
(b) Compound X:
\[\begin{array}{cc}
\ce{H\phantom{..}H\phantom{..}}\\
|\phantom{...}|\phantom{..}\\
\ce{H-C-C-OH}\\
|\phantom{...}|\phantom{..}\\
\ce{H\phantom{..}H\phantom{..}}\\
\end{array}\]
Compound Y:
\[\begin{array}{cc}
\ce{\phantom{..}H\phantom{..}O\phantom{....}}\\
|\phantom{...}||\phantom{..}\\
\ce{H-C-C-OH}\\
|\phantom{......}\\
\ce{H}\phantom{......}\\
\end{array}\]
(c) Compound P is an ester named ethyl acetate.
(d) Esterification reaction
(e) \[\ce{\underset{\text{Ethanol}}{C2H5OH} + \underset{\text{Acetic acid}}{CH3COOH} ->[conc.H2SO4]\underset{\text{Ethyl acetate}}{CH3COOC2H5} + H2O}\]
संबंधित प्रश्न
A student adds a few drops of ethanoic acid to test tubes X, Y and Z containing aqueous solutions of sodium chloride, sodium hydroxide and sodium carbonate, respectively. If he now brings a burning splinter near the mouth of the test tubes immediately after adding ethanoic acid in each one of them, in which of the test tube or test tubes the flame will be extinguished?
(A) X and Y
(B) Y and Z
(C) X and Z
(D) only Z
Choose the correct alternative and rewrite the following:
Acetic acid ..................
When ethanoic acid reacts with sodium hydrogen carbonate, then a salt X is formed and a gas Y is evolved. Name the salt X and gas. Y Describe an activity with the help of a labelled diagram of the apparatus used to prove that the evolved gas is the one which you have named. Also write the chemical equation of the reaction involved.
Esters are sweet-smelling substances and are used in making perfumes. Describe an activity for the preparation of an ester with the help of a well labelled diagram. Write an equation for the chemical reaction involved in the formation of the ester. Also write the names of all the substances involved in the process of esterification.
Vinegar is a solution of about:
(a) 5 to 8 per cent ethanoic acid in alcohol
(b) 5 to 8 per cent ethanoic acid in water
(c) 50 to 80 per cent ethanoic acid in water
(d) 50 to 80 per cent ethanoic acid in alcohol
An organic compound A (molecular formula C2H4O2) reacts with Na metal to form a compound B and evolves a gas which burns with a pop sound. Compound A on treatment with an alcohol C in the presence of a little of concentrated sulphuric acid forms a sweet-smelling compound D (molecular formula C3H6O2). Compound D on treatment with NaOH solution gives back B and C. Identify A, B, C and
If you take a pinch of sodium hydrogen carbonate powder in a test-tube and add drop-by-drop acetic acid to it, what would you observe immediately? List any two main observations.
Which one of the following are the correct observations about acetic acid?
(A) It turns blue litmus red and smells like vinegar
(B) It turns blue litmus red and smells like burning sulphur
(C) It turns res litmus blue and smells like vinegar
(D) It turns red litmus blue and has a fruity smell
Give balanced chemical equations for the following conversion :
Ethanoic acid to ethyl ethanote
Anita added a drop each of diluted acetic acid and diluted hydrochloric acid on pH paper and compared the colors. Which of the following is the correct conclusion?
