During the initial digestion step of Kjeldahl's method, solid Potassium Sulphate () is intentionally added to the concentrated mixture. The primary physiochemical role of the is to:

Question

During the initial digestion step of Kjeldahl's method, solid Potassium Sulphate ($K_2SO_4$) is intentionally added to the concentrated $H_2SO_4$ mixture. The primary physiochemical role of the $K_2SO_4$ is to:

Prashant Kotian · Accepted Answer

Correct answer: C. acts as a boiling point elevator. By raising the boiling point of the digestion mixture, the reaction can proceed at a higher temperature without boiling off the solvent, greatly accelerating the destruction of the organic framework.

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