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प्रश्न
Choose the correct alternative and rewrite the following:
Acetic acid ..................
पर्याय
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.
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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
A student takes about 6 ml of distilled water in each of the four test tubes P, Q, R and S. He then dissolves an equal amount of four different salts namely, sodium chloride in 'P', potassium chloride in 'Q', calcium chloride in 'R' and magnesium chloride in 'S'. Next, he then adds 10 drops of soap solution to each test tube and shakes its contents. The test tubes in which scum (insoluble substance) is formed with soap are:
(A) P and Q
(B) Q and R
(C) R and S
(D) Q and S
What are esters ?
Name one chemical compound which can be used to distinguish between ethanol and ethanoic acid.
propanol into propanoic acid?
Name the process in each case and write the equations of the reactions involved.
Name two oxidising agents which can oxidise ethanol to ethanoic acid.
How does ethanoic acid react with sodium hydrogen carbonate? Give equation of the reaction which takes place.
Give any two uses of ethanoic acid.
Name the product formed and give the appropriate chemical equation for the following:
Sodium reacting with ethyl alcohol.
Give the structural formulae of acetic acid.
What do you notice when acetic acid reacts with alcohol?
Acetic acid is a typical acid. Write one equation in case of its reactions with a bicarbonate.
On adding 2 mL acetic acid to 2 mL of water in a test tube, it was observed that
(A) a clear and transparent solution is formed
(B) a white precipitate is formed almost immediately
(C) two separate layers were formed
(D) a colourless and odourless gas is evolved
Fill in the blank with appropriate word/words.
Denatured alcohol is a mixture of _____ and _______
Choose the correct answer:
Select the acid which contains four hydrozen atoms in it.
Write a balanced chemical equation for the following:
A mixture of sodalime and sodium acetate is heated.
Draw the structural formula for the following:
Ethanoic acid
When sodium hydrogen carbonate is added to ethanoic acid, a gas evolves. Consider the following statements about the gas evolved.
- It turns lime water milky.
- It is evolved with brisk effervescence.
- It has a smell of burning sulfur.
- It is also a by-product of respiration.
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.
Give the balanced chemical equation of the following reaction:
Neutralization of NaOH with ethanoic acid.
