12) A sample of pure sodium carbonate, NazCO3, weighing 0.3542 g is dissolved in water andtitrated with a solution of hydrochloric acid. A volume of 30.23 ml is required to reach themethyl orange end point, the reaction beingNazCO3 +2HCI →2NACI + H20+ CO2Calculate the molarity the normality of the acid(a) Using moles at the equivalence point(b) Using equivalents at the equivalence point.ilibriunmatrations 9) What is the equivalent mass of Mn0?- in the following reaction?Mn0- + 5Fe 2+ + 8H Mn 2+ + 5Fe 3+ + 4H2O10) How many mL of 0.025N KIO3 would be needed to prepare 34.2 mL of 0.0416Nhydrazine in hydrochloric acid.

9) Given unbalanced chemical reaction is - MnO42- + 5Fe2+ + 8H+ <==> Mn2+ + 5Fe3+ + 4H2O…

Answered: 9) What is the equivalent mass of Mn0?-…

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9) What is the equivalent mass of Mn0?- in the following reaction? Mn0- + 5Fe 2+ + 8H Mn 2+ 3+ + 5Fe + 4H20

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter6: Types Of Chemical Reactions And Solution Stoichiometry

Section: Chapter Questions

Problem 142IP: Tris(pentatluorophenyl)borane, commonly known by its aeronym BARF, is frequently used to initiate...

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Concept explainers

Potentiometric Titrations

Potentiometric titration is one of the important titration methods and is mainly carried out to characterize acid solutions. It follows a method similar to that of the normal titration technique, but the main difference is that there is no indicator used in the potentiometric titrations. Instead of using an indicator, electrodes are employed for monitoring the whole titration process. A scientist named Robert Behrend did the potentiometric titration for the first time, and it was done using the mercurous solution and potassium chloride.

Question

12) A sample of pure sodium carbonate, NazCO3, weighing 0.3542 g is dissolved in water and
titrated with a solution of hydrochloric acid. A volume of 30.23 ml is required to reach the
methyl orange end point, the reaction being
NazCO3 +2HCI →2NACI + H20+ CO2
Calculate the molarity the normality of the acid
(a) Using moles at the equivalence point
(b) Using equivalents at the equivalence point
.ilibriunm
atrations

9) What is the equivalent mass of Mn0?- in the following reaction?
Mn0- + 5Fe 2+ + 8H Mn 2+ + 5Fe 3+ + 4H2O
10) How many mL of 0.025N KIO3 would be needed to prepare 34.2 mL of 0.0416N
hydrazine in hydrochloric acid.

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