Question

write the difference between protophillic and protogenic and aprotic solvents​

Answer 1

Answer:

(i) Protophilic solvents: Solvents which have greater tendency to accept protons, i.e., water, alcohol, liquid ammonia, etc.

(ii) Protogenic solvents: Solvents which have the tendency to produce protons, i.e., water, liquid hydrogen chloride, glacial acetic acid, etc.

Answer 2

Answer:

Here's your answer

Explanation:

These terms are analogous to the acidic and basic behaviour exhibited by solvents when a solute is dissolved.

Protogenic means the ability to generate protons (H+).

Protophilic means the ability to accept protons (H+).

Hence examples of protogenic solvents are acetic acid, H2SO4 etc. and examples of protophilic solvents are ammonia, pyridine etc.

Note- Protophilic and protogenic solvents are basic and acidic solvents respectively. A weakly basic solvent has less affinity for a proton as compared to that of a strongly basic solvent.

Similarly, a weak acid has less ability to donate protons than a strong acid.

This concept is utilised in an understanding of the difference in the acidic and basic character of strong acids and strong bases (called levelling effect) as they exhibit almost equal strengths in water solvent.

EDIT- Amphiprotic species can function either as an acid or as a base and these have the characteristics of both an acid as well as a base. Water, alcohol, bisulfate ion, bicarbonate ion, amino acids etc. are examples of amphiprotic solvents.

Ampholyte substances are a type of amphiprotic substances. These contain both acidic and basic groups like alpha-amino acids. These mostly exist as zwitterions (dipolar ions) via intramolecular transfer at their isoelectric point. At Isoelectric pH, these are charged but average charge becomes zero.