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What is the function of potassium sulphate in determination of nitrogen by kjeldhal method?
EXPLANATION
Casein Fractionation
- Role of Potassium Sulphate in Kjeldahl Nitrogen Digestion:
- Boiling Point Elevation:
- Concentrated sulfuric acid boils at $338^\circ\text{C}$, which is insufficient for rapid organic matter destruction.
- Adding potassium sulphate ($\text{K}_2\text{SO}_4$) raises the boiling point of the digestion mixture to $370 - 380^\circ\text{C}$, accelerating oxidative digestion without causing nitrogen volatilization losses.
- Conclusion: Increasing the boiling point of sulphuric acid (Option 1).
Correct option: (1) Increasing the boiling point of sulphuric acid
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