what is the purpose of Buffer in any titration?Ex:In
determination of hardness of water we use ammonia
ammoniachloride buffer in titration with EDTA.Why?
Answer Posted / vikash singh(up college
we use high buffer solution to mantain the pH of the solution medium bacause if we not use it then the pH of the solution decreases and the stability of the chelating complex decreases.
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I have compare C2H2-air and C2H2-N2O flame AAS on determination calcium. Both use same range of std to plot calibration curve. (2-6ppm) When i measure the sample with phosphate, KCl and LaCl, C2H2-N2O flame give false positive result, around 0.5ppm. When i measure the sample with phosphste, KCl and EDTA. C2H2-N2O flame also give 0.5ppm false positive. But both above mentioned sample would not give false positive when measured by C2H2-air flame. What is the reason?
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