In acid base titration, after complet consumption of HCl by NaOH, addition of next drop of NaOH will give pink colour with phenolpthalein indicator. Why this pink colour appear? Why not blue, black, green or anything elese?

3 Answers  

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What is Stray light ? & what is the IMP of this

2 Answers  

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WHEN AN UN KNOWN SAMPLE IS GIVEN TO U,HOW WILL U START THE ANALYSIS(ie FIRST WHICH TEST TO BE DONE,NEXT,THEN NEXT),HOW WILL U DECIDE WHICH TYPE OF ANALYSIS TO BE DONE FOR IT?

2 Answers   Aurobindo,

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what is end capping in hplc coulmn

2 Answers   Lupin, Zydus Cadila,

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What is unit of pH?

26 Answers  

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key components in hplc?

3 Answers   Laurus,

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Why dissolution test apparatus calibration with salycilic acid tablets was stopped by FDA&USP from the year of 2009?

1 Answers   Aurobindo,

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Why only lead standard solution is uesd to perform heavy metal test.

2 Answers   Reddy Labs,

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give clarity of linearity and range in method validation

0 Answers  

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why should we do limit of stray light in UV calibration and why should use potassium chloride

2 Answers  

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What is difference between chemical Assay and Hplc assay?

2 Answers   Lee Pharma,

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how can standardized of HCl of 0.1 N

7 Answers  

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