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प्रश्न
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.
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उत्तर
- The reaction shown in the figure is esterification.
- Balanced equation of the reaction between ethanol and ethanoic acid is as follows:
\[\ce{\underset{\text{Ethanol}}{C2H5OH} + \underset{\text{Ethanoic acid}}{CH3COOH} ->[Conc.][H2SO4] \underset{\text{Ethyl ethanoate}}{CH3COOC2H5} + \underset{\text{Water}}{H2O}}\] - The product formed is ethyl ethanoate.
Use: It is used for making fragrances and flavouring agents. - The catalyst used in the reaction is concentrated sulphuric acid.
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संबंधित प्रश्न
A student adds a spoon full of powdered sodium hydrogen carbonate to a flask containing ethanoic acid. List two main observations, he must note in his note book, about the reaction that takes place. Also write chemical equation foe the reaction.
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
Complete the following chemical equations :CH3COOH + Na2CO3 →
Which of the following will give brisk effervescence with sodium hydrogen carbonate and why?
CH3COOH, CH3CH2OH
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.
Write the IUPAC name of the following:
\[\begin{array}{cc}
\ce{CH3}\\
|\\
\ce{CH3 -C -CH3}\\
|\\
\ce{CH3}
\end{array}\]
A student puts a drop of acetic acid first on a blue litmus paper and then on a red litmus paper. He would observe that
(A) the red litmus paper turns colourless and there is no change in the blue litmus paper.
(B) the red litmus paper turns blue and the blue litmus paper turns red.
(C) there is no change in the red litmus paper and the blue litmus paper turns red.
(D) there is no change in the blue litmus paper and the red litmus paper turns blue.
Explain the following term with example.
Reduction
State how the following conversions can be carried out:
Ethyl alcohol to Ethane
Write a balanced chemical equation for the following:
Monochloroethane is hydrolysed with aqueous KOH.
Write a balanced chemical equation for the following:
A mixture of sodalime and sodium acetate is heated.
Identify the term or substance based on the descriptions given below:
Ice like crystals formed on cooling an organic acid sufficiently.
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.
What are catalysts?
Write the answers to the questions by observing the following figure.
- Write the chemical reaction shown in the figure above in the form of a balanced equation.
- Write the name of the gas coming out of the large test tube in the above chemical reaction.
- Why do small bubbles of lime appear in the small test tube?
- What is the change in colour of lime net?
A student while observing the properties of acetic acid would report that this smells like ______.
Write the chemical equation for the following:
Saponification Reaction
A spatula full of sodium carbonate is taken in a test tube and 2 mL of dilute ethanoic acid is added to it.
Write a chemical equation for the reaction.
Give the balanced chemical equation of the following reaction:
Neutralization of NaOH with ethanoic acid.
Give the balanced chemical equation of the following reaction:
Neutralization of NaOH with ethanoic acid.
