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प्रश्न
When ethanoic acid reacts with sodium hydrogen carbonate, then a salt X is formed and a gas Y is evolved. Name the salt X and gas. Y Describe an activity with the help of a labelled diagram of the apparatus used to prove that the evolved gas is the one which you have named. Also write the chemical equation of the reaction involved.
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उत्तर
When ethanoic acid reacts with sodium hydrogen carbonate, a brisk effervescence of carbon dioxide gas (Y) is evolved. The salt (X) formed as a result of this reaction is sodium ethanoate.
Let's react ethanoic acid with sodium hydrogen carbonate.
(1) Take a boiling tube and add 0.5gm of sodium hydrogen carbonate to it. To this, add 2 ml of dilute ethanoic acid through a thistle funnel.
(2) You will notice a brisk effervescence of carbon dioxide gas.
(3) Take a test tube containing lime water and pass the carbon dioxide gas through it.
(4) You will observe the lime water turning milky. Carbon dioxide is the only gas which turns lime water milky.
This activity proves that carbon dioxide gas is evolved when ethanoic acid reacts with sodium hydrogen carbonate.
The diagram of the entire experiment is shown below:
The chemical equation of the above reaction is as follows:
`CH_3 COOH + NaHCO_3 -> CH_3 COONa+ CO_2 + H_2 O`
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संबंधित प्रश्न
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
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:CH3COOC2H5+NaOH→
Complete the following chemical equations: C2H5OH+O2→
Give balanced chemical equations for Sodium ethanoate to methane.
Give a reason for Conductivity of dilute hydrochloric acid is greater than that of acetic acid
Write the name and chemical formula of the simplest organic acid.
What is the common name of methanol?
Choose those compounds from the following which can turn blue litmus solution red:
HCHO, CH3COOH, CH3OH, C2H5OH, HCOOH, CH3CHO
Give reasons for your choice.
How is ethanoic acid obtained from ethanol? Write down the chemical equation of the reaction involved.
Give any two uses of ethanoic acid.
Write the names of the first three members of the carboxylic acid series.
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.
Acetic acid smells like:
(1) a banana
(2) vinegar
(3) an orange
(4) a lemon
Acetic acid solution turns:
(1) blue litmus red
(2) red litmus blue
(3) blue litmus colourless
(4) red litmus colourless
What is the main constituent of vinegar?
Choose the correct answer:
Select the acid which contains four hydrozen atoms in it.
Convert ethane to acetic acid.
Anita added a drop each of diluted acetic acid and diluted hydrochloric acid on pH paper and compared the colors. Which of the following is the correct conclusion?
