For most acid–base titrations the inflection point, the point on a titration curve having the greatest slope, very nearly coincides with the equivalence point.The principal limitation to using an inflection point to locate the equivalence point is that the inflection point must be present. For some titrations the inflection point may be missing or difficult to find.An inflection point actually precedes its corresponding equivalence point by a small amount very diluted titrant are used, with the error approaching 0.1% for strong acids and nirtic acid is fumming liquid and moisture sensitive, these solution are not stored for long time. for better results 1.0 x 10-1M in HNO3 used.
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