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प्रश्न
If you take a pinch of sodium hydrogen carbonate powder in a test-tube and add drop-by-drop acetic acid to it, what would you observe immediately? List any two main observations.
उत्तर
When sodium hydrogen carbonate is added to a flask containing acetic acid, the two observations noted are as follows:
(i) Brisk effervescence is seen because of CO2 gas escaping out from the reaction mixture. The gas turns lime water milky.
(ii) Some amount of heat is evolved during the reaction.
Reactions:\[{NaHCO}_3 + {CH}_3 COOH \to {CH}_3 COONa + {CO}_2 \uparrow + H_2 O\]
\[Ca \left( OH \right)_2 + {CO}_2 \to {CaCO}_3 + H_2 O\]
APPEARS IN
संबंधित प्रश्न
What will you observe when dilute ethanoic acid and dilute hydrochloric acid are put on universal indicator paper, one by one? What does it show?
What happens when ethanoic acid reacts with sodium carbonate? Write chemical equation of the reaction involved.
Name the reducing agent used to convert acetic acid into ethanol?
What do you observe when acetic acid is added to sodium bicarbonate?
Which one of the following are the correct observations about acetic acid?
(A) It turns blue litmus red and smells like vinegar
(B) It turns blue litmus red and smells like burning sulphur
(C) It turns res litmus blue and smells like vinegar
(D) It turns red litmus blue and has a fruity smell
On adding NaHCO3 to acetic acid, a gas is evolved which turns lime water milky due to the formation of:
(1) Calcium bicarbonate
(2) Calcium hydroxide
(3) Calcium carbonate
(4) Calcium acetate
Explain the following reaction with an example.
Esterification
Ester is formed by the reaction between ______.
Raina while doing certain reactions observed that heating of substance ‘X’ with a vinegar-like smell with a substance ‘Y’ (which is used as an industrial solvent.) in the presence of conc. Sulphuric acid in a water bath gives a sweet-smelling liquid ‘Z’ having molecular formula C4H8O2. When heated with caustic soda (NaOH), ‘Z’ gives back the sodium salt and the compound ‘Y’.
Identify ‘X’, ‘Y’, and ‘Z’. Illustrate the changes with the help of suitable chemical equations.
Give the balanced chemical equation of the following reaction:
Neutralization of NaOH with ethanoic acid.
