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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.
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उत्तर
Two main observations about the reaction:
(i) Brisk effervescence of carbon dioxide which turns lime water milky.
(ii) It is a neutralisation reaction and heat is released
CH3COOH+NaHCO3→CH3COONa+H2O+CO2
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संबंधित प्रश्न
In order to study saponification reaction, we first prepare 20% solution of sodium hydroxide. If we record the temperature of this solution just after adding sodium hydroxide flakes to water and also test its nature using litmus, it may be concluded that the process of making this solution is
(A) exothermic and the solution is alkaline
(B) endothermic and the solution is alkaline
(C) endothermic and the solution is acidic
(D) exothermic and the solution is acidic
Identify the term or substance based on the descriptions given below
Ice like crystals formed on cooling an organic acid sufficiently.
When zinc powder is added to acetic acid ______________
(a) the mixture becomes warm
(b) a gas is evolved
(c) the colour of the mixture becomes yellow
(d) a solid settles at the bottom
How is ethanoic acid obtained from ethanol? Write down the chemical equation of the reaction involved.
How would you distinguish between ethanol and ethanoic acid by chemical test?
Consider the following organic compound:
CH3OH, C2H5OH, CH3COCH3, CH3COOH, C2H5COOH, C4H9COOC2H5, CH4, C2H6, CH3CHO, HCHO
Out of these compound:
Which compound is most likely to be sweet-smelling?
Ethanol can be oxidized to ethanoic acid. Write the equation and name the oxidizing agent.
What is glacial acetic acid?
When acetaldehyde is oxidized with acidified potassium dichromate, it forms ______.
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.
