I need help with #6 and 7 please. The unknown acid type; H3A, and it's molar mass is 192.140 Balanced chemical equation for neutralization of acid with NaOHSaved: BIIIU三一前_ 中fx I 8I Ee田元T會1训二FNormalH3A + 3NAOH -Na3A + 3H20Table viewList viewTable 6. Calculations for percent by massSample 1Sample 2Sample 3[1] Mass sample (g)28.20726.07128.702[2] Burette reading ofNaOH, initial (mL)1.191.914.78[3] Burette reading ofNaOH, final (mL)18.2417.2522.13[4] Volume of NaOH,dispensed (mL)17.0515.3417.35[5] Molar concentrationof NaOH (part A)0.1077[6] Mass of acid insample (g)[7] Percentage by massin sample (%)

First of all you need to calculate the no of moles of NaOH used in the titration using formula -…

Table 6. Calculations for percent by mass Sample 2 Sample 3 Sample 1 26.071 28.702 28.207 [1] Mass sample (g) [2] Burette reading of NaOH, initial (mL) 1.91 4.78 1.19 [3] Burette reading of N2OH, final (mL) 17.25 22.13 18.24 17.35 [4] Volume of NaOH, dispensed (mL) 17.05 15.34 [5] Molar concentration of NaOH (part A) 0.1077 [6] Mass of acid in sample (g) [7] Percentage by mass in sample (%)

Table 6. Calculations for percent by mass Sample 2 Sample 3 Sample 1 26.071 28.702 28.207 [1] Mass sample (g) [2] Burette reading of NaOH, initial (mL) 1.91 4.78 1.19 [3] Burette reading of N2OH, final (mL) 17.25 22.13 18.24 17.35 [4] Volume of NaOH, dispensed (mL) 17.05 15.34 [5] Molar concentration of NaOH (part A) 0.1077 [6] Mass of acid in sample (g) [7] Percentage by mass in sample (%)

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter7: Chemical Energy

Section: Chapter Questions

Problem 134IP: On Easter Sunday, April 3, 1983, nitric acid spilled from a tank car near downtown Denver, Colorado....

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