Advertisements
Advertisements
प्रश्न
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.
Advertisements
उत्तर
Physical properties of acetic acid:
a) It freezes during winters, as its melting point is 290 K.
b) It has a characteristic vinegar-like odour.
When a pinch of sodium hydrogen carbonate is added to acetic acid in a test tube, a brisk effervescence is observed due to evolution of a colourless and odourless carbon dioxide gas, CO2.
Chemical equations for the reaction:
CH3COOH(aq) + NaHCO3(s) → CH3COONa(aq) + H2O(l) + CO2(g)
APPEARS IN
संबंधित प्रश्न
You have four test tubes, A, B, C and D containing sodium carbonate, sodium chloride, lime water and blue litmus solutions respectively. Out of these the material of which test tube/ test tubes would be suitable for the correct test of acetic/ethanoic acid?
(a) only A
(b) A and B
(c) B and C
(d) A and D
Complete the following chemical equations :CH3COOH + Na2CO3 →
What happens when ethanoic acid reacts with sodium carbonate? Write chemical equation of the reaction involved.
Explain the following term with example.
Monomer
Draw the structural formula of a compound with two carbon atoms in the following case:
An alkane with a carbon to carbon single bond.
When acetaldehyde is oxidized with acidified potassium dichromate, it forms ______.
Ketone : –CO– : : Ester : _______
Give the balanced chemical equation of the following reaction:
Evolution of carbon dioxide by the action of ethanoic acid with NaHCO3.
Ethanoic acid is also known as which of these?
What happens when a small piece of sodium is dropped in ethanol? Write the equation for this reaction.
