Question

ASSERTION: $HN{O_3}$ is not a Bronsted acid in $CHC{l_3}$
REASON: $CHC{l_3}$​ is not an example for a photophilic solvent?

A.Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B.Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C.Assertion is correct but Reason is incorrect
D.Assertion is incorrect but Reason is correct

Answer 1

A Bronsted acid is a proton donor and a Bronsted base is a proton acceptor. Nitride ion (N3-) is not a Bronsted acid as it cannot donate a proton.
Photophilic solvents are basic in character and react with acids to form solvated protons.

Complete step by step answer:
Photophilic solvents are those solvents having a basic character and which tend to react with the acids that they come in contact with, thus leading to the formation of solvated protons. Examples of photophilic solvents can be ammonia and pyridine. Photophilic means the ability to accept protons $\left( {{H^ + }} \right)$.
In the Bronsted-Lowry theory, an acid donates a proton. Photophilic solvents are basic in character and react with acids to form solvated protons and they accept protons and are generally polar in nature. Since $CHC{l_3}$ cannot accept protons and it is a non-polar solvent so it is not an example for podophilic solvent.
Chloroform has a low dielectric constant, does not react with either acids or bases and therefore does not favor ionization.
Hence, both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

Therefore, the correct answer is option (A).

Note: It should be noted that a weak acid has less ability to donate protons than a strong acid. Chloroform is a colorless and volatile, liquid derivative of trichloromethane having an ether-like odor. It was formerly used as an inhaled anesthetic during surgery, but now the primary use of chloroform is in industry, where it is generally used as a solvent and in the production of the refrigerant freon. Acute chloroform toxicity can result in impaired liver function, cardiac arrhythmia, nausea and central nervous system dysfunction. As a byproduct of water chlorination, chloroform may be present in chlorinated water in small amounts.