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प्रश्न
Choose the correct alternative and rewrite the following:
Acetic acid ..................
विकल्प
is insoluble in water
turns blue litmus red
is pale yellow in colour
none of the above
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उत्तर
Acetic acid turns blue litmus red.
APPEARS IN
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
A student adds 2 mL of acetic acid to a test tube containing 2 mL of distilled water. He then shakes the test tube well and leaves it to settle for some time. After about 5 minutes he observes that in the test tube there is :
(A) a clear transparent colourless solution
(B) a clear transparent pink solution
(C) a precipitate settling at the bottom of the test tube
(D) a layer of water the layer of acetic acid
When you add about 2 ml of acetic acid to a test tube containing an equal amount of distilled water and leave the test tube to settle after shaking its contents, what will you observe in the test tube after about 5 minutes?
(A) A white precipitate settling at its bottom
(B) A clear colourless solution
(C) A layer of water over the layer of acetic acid
(D) A layer of acetic acid over the layer of water
Complete the following chemical equations: C2H5OH+O2→
Which of the following will give brisk effervescence with sodium hydrogen carbonate and why?
CH3COOH, CH3CH2OH
Choose those compounds from the following which can turn blue litmus solution red:
HCHO, CH3COOH, CH3OH, C2H5OH, HCOOH, CH3CHO
Give reasons for your choice.
Describe one reaction of a carboxylic acid.
Write the IUPAC name of the following:
\[\begin{array}{cc}
\ce{CH3}\\
|\\
\ce{CH3 -C -CH3}\\
|\\
\ce{CH3}
\end{array}\]
Name the product formed and give the appropriate chemical equation for the following:
Sodium reacting with ethyl alcohol.
Write the names of three compounds which can be oxidised directly or in stages to produce acetic acid.
What do you observe when acetic acid is added to a neutral FeCl3 solution?
Draw the structural formula of a compound with two carbon atoms in the following case:
An alcohol containing two carbon atoms.
Choose the correct answer:
Select the acid which contains four hydrozen atoms in it.
Give balanced chemical equations for the following conversion :
Ethanoic acid to ethyl ethanote
Choose the correct alternative and rewrite the following:
Some acetic acid is treated with solid NaHCO3, the resulting solution will be _________________.
With a labelled diagram describe in brief an activity to show the formation of ester.
Observe the figure and write the answers to the following questions.
- Write the name of the reaction shown in the following figure.
- Write the above chemical reaction in the form of a balanced equation.
- Write the name of the product produced in the above reaction, write a use.
- Write the name of the catalyst used in the above reaction.
Vinegar is a solution of ______.
How is ethanol to ethanoic acid an oxidation reaction different from the reaction in which ethanol burns in the presence of oxygen?
Give the balanced chemical equation of the following reaction:
Neutralization of NaOH with ethanoic acid.
