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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Chemistry

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

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question 83.
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You are performing an experiment in lab that involves the titration of 25.0 mL of H2SO4 solution. You titrate the acidic solution with 0.8067 M NaOH and the equivalence point is reached by the addition of 17.31 mL of NaOH solution. Using the balanced equation below, calculate the molartity of H2SO4 in the flask. Do NOT include units. 2NaOH(aq) + H2SO4(aq) --> 2H2O(l) + Na2SO4(aq)
When all of the following are mixed together in a beaker, what is the molar concentration of the SCN- ion in the solution just after mixing but before any reaction takes place? 10.00 mL of 2.00 x 10-3 M Fe(NO3)3 4.00 mL of 2.00 x 10-3 M KSCN 4.00 mL of 0.50 M HNO3 answer is between 0.004 and 0.005, please explain how with steps.
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2. Using the procedure described in this module, a student determined the percent KHP in an impure sample of KHP. A 3.150-g sample of impure KHP required 41.50 mL of 0.1352M NaOH solution for titration. (a) Calculate the number of moles of NaOH required for the titration. (b) Calculate the number of moles of KHP present in the impure sample of KHP. (c) Calculate the number of grams of KHP present in the impure sample. (d) Calculate the percent of KHP in the impure sample, using Equation 8. Equation 8: percent KHP in the impure sample, % = ( mass of KHP in the sample,g/ mass of sample analyzed, g) (100%)
13. Hydroxyapatite is the main mineral component of bone. How many grams of hydroxyapatite will dissolve in 1.00 L of H20? Ksp = 2.34 x 10-59; Molar mass = 502.3 g/mol Cas (PO4)30H (s) 5 Ca2+ (aq) + 3 PO43- (aq) + OH- (aq)
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