Sodium hydroxide used to make standard NaOH(aq) solutions for acidbase titrations is invariably contaminated with some sodium

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Sodium hydroxide used to make standard NaOH(aq) solutions for acid–base titrations is invariably contaminated with some sodium carbonate.

(a) Explain why, except in the most precise work, the presence of this sodium carbonate generally does not seriously affect the results obtained, for example, when NaOH(aq) is used to titrate HCl(aq).

(b) Conversely, show that if Na₂CO₃ comprises more than 1% to 2% of the solute in NaOH(aq), the titration results are affected.

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General Chemistry Principles And Modern Applications

ISBN: 9780132931281

11th Edition

Authors: Ralph Petrucci, Jeffry Madura, F. Herring, Carey Bissonnette

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Question Posted: Nov 08, 2023 07:49 AM

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Sodium hydroxide used to make standard NaOH(aq) solutions for acidbase titrations is invariably contaminated with some sodium

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a In many acidbase titrations the presence of sodium carbonate Na2CO3 in sodium hydroxide NaOH solut...View the full answer

General Chemistry Principles And Modern Applications

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