When sodium hydrogen carbonate is added to ethanoic acid a gas evolves. Consider the following statements about the gas evolved.
(a) It turns lime water milky.
(b) It is evolved with a brisk effervescence.
(c) It has a smell of burning Sulphur.
(d) It is also a by-product of respiration.
The correct statements are:
(a) (A) and (B) only
(b) (B) and (D) only
(c) (A), (C) and (D)
(d) (A), (B) and (D)
When sodium hydrogen carbonate (NaHCO3) reacts with ethanoic acid, the following reaction takes place and CO2 gas is evolved:
Reaction of Sodium hydrogen carbonate with Ethanoic acid
(Sodium hydrogen carbonate)
CO2 turns lime water milky
It is evolved with brisk effervescence
And it is also a by-product of respiration.
Checking the options:
(A) It turns lime water milky - This is correct.
(B) It is evolved with a brisk effervescence - This is correct.
(C) It has a smell of burning Sulphur - This is not correct.
(D) It is also a by-product of respiration - This is correct.
Therefore, the correct answer is (d) - (A), (B) and (D)
CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 12 years and a teacher from the past 16 years. He teaches Science, Accounts and English at Teachoo