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Science · 2024 · 2 marks
CBSE 2024 · Region 4 · Set 2 · Q22
A spatula full of sodium carbonate is taken in a test tube and $\displaystyle 2$ mL of dilute ethanoic acid is added to it.(a)Write a chemical equation for the reaction.(b)Suggest a method of testing the gas liberated in the reaction.
A spatula full of sodium carbonate is taken in a test tube and $\displaystyle 2$ mL of dilute ethanoic acid is added to it.
(a)
Write a chemical equation for the reaction.
(b)
Suggest a method of testing the gas liberated in the reaction.
Marking-scheme solution
(a) \(\displaystyle 2 \mathrm{CH}_{3} \mathrm{COOH}+\mathrm{Na}_{2} \mathrm{CO}_{3} \longrightarrow 2 \mathrm{CH}_{3} \mathrm{COONa}+\mathrm{H}_{2} \mathrm{O}+\mathrm{CO}_{2}\)
(b) Pass the gas/ \(\displaystyle \mathrm{CO}_{2}\) in lime water. It turns lime water milky.
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CBSE Class 10 Science past-paper question from the 2024board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.