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 difference between chemical Assay and Hplc assay?

2 Answers   Lee Pharma,

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what is the significant of pH in HPlc?

5 Answers   Orchid,

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what v define from IR & NMR spectroscopy ?

2 Answers   Sun Pharma,

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Is it required to inject 6 injections for % RSD of a system suitability in lc or gc

3 Answers   Raks Pharma,

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What is Rf value& Rx value in TLC?

1 Answers   Abbott,

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What is the Defination of Tapdensity ?

4 Answers   Dr Reddys, R L Fine Chem,

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What is differences between normality and molarity.in which cases both are used?

1 Answers   GVK,

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hi i am m.sc organic chem and complete analytical lab tech dipolma now job in qc many time ask question you in m.sc organic why job in qc please help me i can not give proper ans please tell me

3 Answers   Arch Pharmalabs, Natco,

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what is DIPE limit in residual solvent?

1 Answers  

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What is FDA form 482c?

1 Answers   Lupin,

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How much carbon loading in nomalphase columns?

5 Answers  

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