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The compound that does NOT liberate CO2, on treatment with aqueous sodium bicarbonate solution, is
- a)Benzoic acid
- b)Benzenesulphonic acid
- c)Salicylic acid
- d)Carbolic acid (Phenol)
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
The compound that does NOT liberate CO2, on treatment with aqueous sod...
Carbolic acid (Phenol) is weaker acid than carbonic acid and hence does not liberate CO2 on treatment with aq. NaHCO3 solution.
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The compound that does NOT liberate CO2, on treatment with aqueous sod...
Explanation:
When a compound is treated with aqueous sodium bicarbonate (NaHCO3) solution, it undergoes a reaction known as the bicarbonate test. In this test, if the compound is acidic, it reacts with sodium bicarbonate to liberate carbon dioxide (CO2) gas.
In the given options, we need to identify the compound that does NOT liberate CO2 when treated with aqueous sodium bicarbonate solution.
Benzoic acid (Option A):
When benzoic acid is treated with NaHCO3 solution, it reacts to liberate CO2 gas according to the following equation:
C6H5COOH + NaHCO3 → C6H5COONa + CO2 + H2O
So, benzoic acid is not the correct answer.
Benzenesulphonic acid (Option B):
Similar to benzoic acid, benzenesulphonic acid is also an acidic compound. Therefore, it reacts with NaHCO3 solution to liberate CO2 gas. Hence, benzenesulphonic acid is not the correct answer.
Salicylic acid (Option C):
Salicylic acid is a weak acid and can react with NaHCO3 solution to form sodium salicylate, CO2 gas, and water. Hence, salicylic acid is not the correct answer.
Carbolic acid (Phenol) (Option D):
Phenol is a weak acid and does not react with NaHCO3 solution to liberate CO2 gas. This is because phenol does not possess a carboxyl group (COOH) that is necessary for the reaction with NaHCO3 to occur. Phenol remains unreactive in this test.
Therefore, the correct answer is option D, Carbolic acid (Phenol), as it does not liberate CO2 gas on treatment with aqueous sodium bicarbonate solution.
When a compound is treated with aqueous sodium bicarbonate (NaHCO3) solution, it undergoes a reaction known as the bicarbonate test. In this test, if the compound is acidic, it reacts with sodium bicarbonate to liberate carbon dioxide (CO2) gas.
In the given options, we need to identify the compound that does NOT liberate CO2 when treated with aqueous sodium bicarbonate solution.
Benzoic acid (Option A):
When benzoic acid is treated with NaHCO3 solution, it reacts to liberate CO2 gas according to the following equation:
C6H5COOH + NaHCO3 → C6H5COONa + CO2 + H2O
So, benzoic acid is not the correct answer.
Benzenesulphonic acid (Option B):
Similar to benzoic acid, benzenesulphonic acid is also an acidic compound. Therefore, it reacts with NaHCO3 solution to liberate CO2 gas. Hence, benzenesulphonic acid is not the correct answer.
Salicylic acid (Option C):
Salicylic acid is a weak acid and can react with NaHCO3 solution to form sodium salicylate, CO2 gas, and water. Hence, salicylic acid is not the correct answer.
Carbolic acid (Phenol) (Option D):
Phenol is a weak acid and does not react with NaHCO3 solution to liberate CO2 gas. This is because phenol does not possess a carboxyl group (COOH) that is necessary for the reaction with NaHCO3 to occur. Phenol remains unreactive in this test.
Therefore, the correct answer is option D, Carbolic acid (Phenol), as it does not liberate CO2 gas on treatment with aqueous sodium bicarbonate solution.
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The compound that does NOT liberate CO2, on treatment with aqueous sodium bicarbonate solution, isa)Benzoic acidb)Benzenesulphonic acidc)Salicylic acidd)Carbolic acid (Phenol)Correct answer is option 'D'. Can you explain this answer?
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