The dispensing of Na2H2Y solution from the buret is discontinued when the solution turns purple. However in part B.3 the standardized Na2H2Ysolution is then used to titrate a water sample to the (correct) sky-blue endpoint. Will the reported hardness molar concentration of the Na2H2Y solution be too high, too low, or unaffected? Explain

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Sixta KovacekLv2

31 Dec 2019

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A) The Eriochrome Black T indicator is mistakenly omitted. whatis the color of the analyte (standard Ca^2+ solution)?

Describe the appearance of the analyte with the continuedaddition of the Na^2H^2Y solution? Explain?

B) The Dispensing of the Na^2H^2Y solution from the buret isdiscountinued when the solution turns purple. Because of thistechnique error, will the reported molar concentration of theNa^2H^2Y solution be too high, too low, or unaffected?

C) The Dispensing of the Na^2H^2Y solution from the buret isdiscountinued when the solution turns purple. Because of thistechnique error, will the reported hardness of the water sample betoo high, too low, or unaffected?