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प्रश्न
Observe the diagram given below and answer the questions:
- Name the reactants in this reaction.
- Which gas comes out as effervescence in the bigger test tube?
- What is the colour change in the lime water?
- In the above experiment instead of sodium carbonate which chemical can be used to get same products?
- Write the use of acetic acid.
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उत्तर
- The reactants are acetic acid CH3COOH and sodium carbonate Na2CO3.
- The gas produced is carbon dioxide CO2.
- When carbon dioxide gas is passed through lime water, it turns lime water milky or cloudy due to the formation of calcium carbonate. Therefore, the colour change in the limewater would be from clear to milky.
- In the above experiment, instead of sodium carbonate, sodium bicarbonate can be used to get the same products.
- Acetic acid is widely used in the culinary arts as a key ingredient in vinegar. It is also used industrially as a chemical reagent for the production of chemical compounds, in the manufacture of plastics, and in the food industry as a preservative and flavouring agent.
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संबंधित प्रश्न
Ethanoic acid has a .................... odour.
(a) Rotten eggs
(b) Pungent
(c) Vinegar-like
(d) Mild
A student puts a drop of reaction mixture of a saponification reaction first a blue litmus paper and then on a red litmus paper. He may observe that:
(a) There is no change in the blue litmus paper and the red litmus paper turns white.
(b) There is no change in the red litmus paper and the blue litmus paper turns red.
(c) There is no change in the blue litmus paper and the red litmus paper turns blue.
(d) No change in colour is observed in both the litmus papers
What are esters ?
Complete the following chemical equations : C2H5OH`("Conc."H_2SO_4)/(443K)`>
Identify the term or substance based on the descriptions given below
Ice like crystals formed on cooling an organic acid sufficiently.
Describe a test for carboxylic acid.
The organic acid present in vinegar is ______.
How would you distinguish experimentally between an alcohol and carboxylic acid on the basis of a chemical property?
Describe one reaction of a carboxylic acid.
How would you distinguish between ethanol and ethanoic acid by chemical test?
What do you observe when acetic acid is added to sodium bicarbonate?
A student is studying the properties of acetic acid. List two physical properties of acetic acid he observes. What happens when he adds a pinch of sodium hydrogen carbonate to this acid? Write any two observations.
Which of the following observations is true about dilute solution of acetic acid?
(A) It smells like vinegar and turns red litmus blue
(B) It smells like onion and turns blue litmus red
(C) It smells like orange and turns red litmus blue
(D) It smells like vinegar and turns blue litmus red
Fill in the blank with appropriate word/words.
Esterification is the reaction between carboxylic acid and ______ in presence of ____
Why is pure acetic acid also known as glacial acetic acid?
Choose the correct alternative and rewrite the following:
Some acetic acid is treated with solid NaHCO3, the resulting solution will be _________________.
Write the molecular formula of the given compound.
Ethanoic acid
Give the balanced chemical equation of the following reaction:
Neutralization of NaOH with ethanoic acid.
Write the chemical equation for the following:
Saponification Reaction
How is ethanol to ethanoic acid an oxidation reaction different from the reaction in which ethanol burns in the presence of oxygen?
