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प्रश्न
Draw the structure of butanoic acid.
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उत्तर
Structure of butanoic acid (C3H7COOH) is as follows:
\[\begin{array}{cc}
\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{O}\phantom{.}\phantom{.}\\
|\phantom{....}|\phantom{....}|\phantom{....}||\phantom{..}\\
\ce{H - C - C - C - C - OH}\\
|\phantom{....}|\phantom{....}|\phantom{.....}\phantom{..}\\
\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{.....}\phantom{..}\end{array}\]
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संबंधित प्रश्न
Consider the following comments about saponification reactions:
I. Heat is evolved in these reactions.
II. For quick precipitation of soap, sodium chloride is added to the reaction mixtures.
III. Saponification reactions are a special kind of neutralisation reactions.
IV. Soaps are basic salts of long-chain fatty acids.
The correct comments are
(a) I, II and III
(b) II, III and IV
(c) I, II and IV
(d) Only I and IV
Complete the following chemical equations :CH3COOH + Na2CO3 →
Name the following:
The distinctive reaction that takes place when ethanol is treated with acetic acid.
Complete the following equation:
`CH_3 COOH + CH_2 H_5 OH` 
What type to compound is CH3COOH?
Choose those compounds from the following which can turn blue litmus solution red:
HCHO, CH3COOH, CH3OH, C2H5OH, HCOOH, CH3CHO
Give reasons for your choice.
An organic compound X of molecular formula C2H4O2 gives brisk effervescence with sodium hydrogen carbonate. Give the name and formula of X.
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
A student takes Na2CO3 powder in a test tube and pours some drops of acetic acid over it. He observes:
(A) no reaction in the test tube
(B) colourless gas with pungent smell
(C) bubbles of a colourless and odourless gas
(D) white fumes with smell of vinegar
How is ethyne prepared in the laboratory?
What is vinegar and glacial acetic acid?
What type of compound is formed by the reaction between acetic acid and an alcohol?
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.
Convert ethane to acetic acid.
A student while observing the properties of acetic acid would report that this smells like ______.
Why is glacial acetic acid called so?
Raina while doing certain reactions observed that heating of substance ‘X’ with a vinegar-like smell with a substance ‘Y’ (which is used as an industrial solvent.) in the presence of conc. Sulphuric acid in a water bath gives a sweet-smelling liquid ‘Z’ having molecular formula C4H8O2. When heated with caustic soda (NaOH), ‘Z’ gives back the sodium salt and the compound ‘Y’.
Identify ‘X’, ‘Y’, and ‘Z’. Illustrate the changes with the help of suitable chemical equations.
Give the balanced chemical equation of the following reaction:
Combustion of ethanol.
