Q3/ A) 0.63 g of a sample containing Na CO,, NaHCO, and inert impurities is titrated with 0.2M HCI, requiring 17.2 ml to reach the phenolphthalein end point and a total of 43.5 mL. to reach the modified methyl orange end point, How many grams Na CO, and NAHCO, are in the mixture?

Q3/ A) 0.63 g of a sample containing Na CO,, NaHCO, and inert impurities is titrated with 0.2M HCI, requiring 17.2 ml to reach the phenolphthalein end point and a total of 43.5 mL. to reach the modified methyl orange end point, How many grams Na CO, and NAHCO, are in the mixture?

Chemical Principles in the Laboratory

11th Edition

ISBN:9781305264434

Author:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Publisher:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Chapter24: The Standardization Of A Basic Solution And The Determination Of The Molar Mass Of An Acid

Section: Chapter Questions

Problem 3ASA: A 0.3012g sample of an unknown monoprotic acid requires 24.13mL of 0.0944MNaOH for neutralization to...

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Question

Q3/ A) 0.63 g of a sample containing Na CO,, NaHCO; and inert impurities
is titrated with 0.2 M HCI, requiring 17.2 ml. to reach the phenolphthalein end
point and a total of 43.5 mL to reach the modified methyl orange end point,
How many grams Na CO, and NaHCO, are in the mixture?

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