Unit 1 • Class 12Chemistry (Chem.202)
Volumetric Analysis
आयतनमितीय विश्लेषण
Primary and secondary standards, molarity, normality, law of chemical equivalence N1 V1 = N2 V2, titration curves, indicators, acid-base and redox titration numericals.
Lesson Summary & Key Concepts
Quantitative chemical analysis through acid-base and redox titrimetry: primary/secondary standards, normality, molarity, gram equivalent weight calculations, and KMnO4 redox stoichiometry.
Quick Revision Takeaways
Common Exam Pitfalls to Avoid
⚠️ Common Error: Using molar mass instead of equivalent mass when calculating normality.
✓ Correct Approach: Divide molar mass by n-factor to get equivalent weight E before using N = w/(E·V).
Why: Normality is based on equivalent weights, while molarity is based on molar weights.
Content Provenance & Verification
Editorial Verified & Published
Original Author / ContributorNEB Notes Nepal Academic Team
Verified BySenior Subject Specialist (TU / NEB Panel)
Curriculum Versionv1.0 (CDC 2078/2080 Grid)
Last Verified Date2026-10-23
Legitimate Official Curriculum References
public curriculum
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