A 1.2 g sample of mixture of NaOH and Na:CO. containing inert impurities s dissolved and titrated cold with 0.5N HCI. With phenolphthalein as indicator the solution turns colorless after the addition of 30.0 ml of the acid. Methy orange is then added and 12 ml more of the acid is required before this indicator changes color. What is the percentage of NaOH and of Na:CO, in the sample ? 5.

A 1.2 g sample of mixture of NaOH and Na:CO. containing inert impurities s dissolved and titrated cold with 0.5N HCI. With phenolphthalein as indicator the solution turns colorless after the addition of 30.0 ml of the acid. Methy orange is then added and 12 ml more of the acid is required before this indicator changes color. What is the percentage of NaOH and of Na:CO, in the sample ? 5.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter17: Complexation And Precipitation Reactions And Titrations

Section: Chapter Questions

Problem 17.35QAP

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