Grams of diprotic acidInitial buret reading of NaOH(aq)Final buret reading of NaOH(aq)Volume of added NaOH(aq)Molarity of NaOH(aQ)1 mL. = 1cm³NaOH(aq) + H2A(aq) -----→ NazA(aq) + H2O(1)0.1482 g0.00 mL.19.50 mL.0.1029 MCalculate molar mass of H2A(aq) acid.Hint:Moles of NaOH(aq) :-→ moles of H2A(aq) ----------> molar mass of H2A(aq) in g/ mole Chem. 1A:Acid-Base titration : to determine molar mass of a diprotic ACID : H2APut a weighing paper on the pan of balance and tare it. Then add 0.1482 g of an unknowndiprotic acid. Transfer the acid to a Erlenmeyer flask add 35.0 mL. water and 4 dropsphenophethaleine. The color of solution is colorless.Set up a 50.00 mL. buret: wash the buret with tap water twice, with deionized water twice andand the 0.1029 M NAOH(aq). Fill the buret with 0.1029 M NaOH(aq), remove the air bubbleand adjust the initial buret reading to 0.00 mL.Put the Erlenmeyer flask containing the acid and the phenolphethaleine below the buret with0.1029 M NAOH(aq). Add NaOH(aq) from buret to the Erlenmeyer flask containing the diproticacid and phenolphethaleine , until the color of the solution turn to pink by adding one or twodrops of NaOH(aq). Then stop adding NaOH(aq) from buret and read the final volume ofNaOH(aq).Acid-base titration:buretbase of knownconcentration+ stopcockacid of unknownconcentrationReading the final buret reading of NaOH(aq):19.62 cm1919.50 cm'2019.42 cmThe following data table has been obtained

Answered: Image /qna-images/answer/1a688162-1e0b-476b-b67c-c3c4d08a9f17.jpg

Grams of diprotic acid Initial buret reading of NaOH(aq) Final buret reading of NaOH(aq) Volume of added NaOH(aq) Molarity of NaOH(aQ) 1 mL. = 1cm³ NaOH(aq) + H2A(aq) -------→ Na2A(aq) + H2O(1) 0.1482 g 0.00 mL. 19.50 mL. 0.1029 M Calculate molar mass of H2A(aq) acid. Hint: Moles of NaOH(aq) ----------> moles of H2A(aq) - -→ molar mass of H2A(aq) in g/ mole

Grams of diprotic acid Initial buret reading of NaOH(aq) Final buret reading of NaOH(aq) Volume of added NaOH(aq) Molarity of NaOH(aQ) 1 mL. = 1cm³ NaOH(aq) + H2A(aq) -------→ Na2A(aq) + H2O(1) 0.1482 g 0.00 mL. 19.50 mL. 0.1029 M Calculate molar mass of H2A(aq) acid. Hint: Moles of NaOH(aq) ----------> moles of H2A(aq) - -→ molar mass of H2A(aq) in g/ mole

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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