The following results of alkalinity determination for 100 ml sample titrated with 0.02N H,SO4. (Answer 8-9) Sample pH- 11 Phenolphthalein end point 10ml Methyl orange end point 15.5ml 8Caustig alkalinity in mg/l asCaCO 17.0 0.001 50 200 9) Total alkalinity in mg/1 asCaCO, 230 105 300 155

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Precipitation Titration

Precipitation analysis is used to analyze drugs, and to measure the salt content in food and beverages. It is an important concept from the examination point of view many practical questions are asked on the topic. This topic is significant in the professional exams for both undergraduate and graduate courses, especially for