3. Many scientists are confused as to why they cannot measure the pH of a pur so

Question

3. Many scientists are confused as to why they cannot measure the pH of a pur solution, CoHi4. Dr. V has spent many an hour explaining to other scientists the reasons why the pH of pure hexane cannot be measured and why pure hexane has no pH. Why is there no pH for a hexane solution? Hint: If there is a pH, there must be a source of hydrogen ions, and those hydrogen ions must be soluble in the solvent. Hint: Hexane has no favorable interactions with H'. Hint: Hexane does not autoionize. Hint: pH is defined as the -log[Hla e hexane

Explanation / Answer

Hexane is an non ionizable molecule, so it doesn’t generate H+ ions. The pH of any compound is depends on concentration of H+ ions. Generally molecule and its ions are equilibrium in aqueous medium. However some organic solvents like Acetone, DMSO, DMF are ionizable. Hence these solvents have some pH (not neutral) but in the case of Hexane the pH is 7 (neutral). This is due to Hexane has no chemical interaction with H+ ion moreover it cannot auto-ionizable.

Related Questions

Navigate

• Browse (All)
• Browse 3
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.