Solve for the dissolved oxygen content of the water sample in Day 1 if the Na₂S₂O3 titrant (0.1152 M) consumed were 10.28 mL, 9.84 mL and 10.02 mL. The volume of the water sample obtained is 30 mL. Assume that the procedure for BOD determination experiment done here is same to our class experiment. A) 316 ppm B) 312 ppm C) 308 ppm D 306 ppm

Solve for the dissolved oxygen content of the water sample in Day 1 if the Na₂S₂O3 titrant (0.1152 M) consumed were 10.28 mL, 9.84 mL and 10.02 mL. The volume of the water sample obtained is 30 mL. Assume that the procedure for BOD determination experiment done here is same to our class experiment. A) 316 ppm B) 312 ppm C) 308 ppm D 306 ppm

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...

See similar textbooks

Similar questions

A solution of 0.1789 M phosphoric acid is used to standardize an unknown solution of sodium hydroxide according to the following equation: H3PO4 + 3 NaOH → Na3PO4 + 3 H20 After performing a quick titration, the following data was collected: Trial 1 Trial 2 Initial volume H3PO4 (mL) 0.13 8.75 Final volume H3PO4 (mL) 15.73 24.08 Initial volume NaOH (mL) 11.40 0.08 Final volume NaOH (mL) 33.06 21.38 What is the concentration of the sodium hydroxide in trial 1? Enter your numerical answer with a leading zero and appropriate sig figs. Do not enter a unit. What is the concentration of the sodium hydroxide in trial 2? Enter your numerical answer with a leading zero and appropriate sig figs. Do not enter a unit. What is the average concentration of the sodium hydroxide? Enter your numerical answer with a leading zero and appropriate sig figs. Do not enter a unit. What is the unit for all of these concentrations?
I want solution asap i will upvote
Data for the titration of 100.00 mL of a weak acid by NaOH are given in the table. Find the end point by preparing a Gran plot, using the last 10% of the volume prior to Ve. mL NaOH 0.00 1.31 2.34 3.91 5.93 7.90 11.35 13.46 15.50 16.92 18.00 18.35 18.95 19.43 19.93 20.48 V₂ = pH 4.14 4.30 4.44 4.61 4.79 4.95 5.19 5.35 5.50 5.63 5.71 5.77 5.82 5.89 5.95 6.04 mL NaOH 20.75 21.01 21.10 21.13 21.20 21.30 21.41 21.51 21.61 21.77 21.93 22.10 22.27 22.37 22.48 22.57 pH 6.09 6.14 6.15 6.16 6.17 6.19 6.22 6.25 6.27 6.32 6.37 6.42 6.48 6.53 6.58 6.63 mL NaOH 22.70 22.76 22.80 22.85 22.91 22.97 23.01 23.11 23.17 23.21 23.30 23.32 23.40 23.46 23.55 pH 6.70 6.74 6.78 6.82 6.86 6.92 6.98 7.11 7.20 7.30 7.49 7.74 8.30 9.21 9.86 mL
Consider the titration of 50.0 mL of 1.00 M H3ASO4(Ka1 = 5.6\times 10-3, Ka2 = 1.7\times 10-7, Ka3 = 4.0\times 10-12) with 1.00 MKOH. Calculate the pH after the addition of each of the following volumes of base. A) 25 mL B) 50 mL C) 75 mL D) 100 mL
Considering the K, values shown below, estimate the pH at which the the titration described in the procedure will reach the first equivalence point. Give your answer to two decimal places. Ka1 = 6.9 x 10-3 %3D K32 = 6.2 x 10-8 %3D Ka3 = 4.8 x 10-13 Hint: Have you looked at the discussion slides? Your Answer: Answer
Please answer correct I will give you upvote definitely But answer correct
#5 plz
question 2 please
May I get some help for #2
I need unique and correct answer. Don't try to copy from anywhere. Do not give answer in image formet and hand writing
QUESTION 2 a) The pH solution is 5.28 at equivalence point. Identify the correct type of acid-base pair titration with the correct examples. b) An analytical chemist need to determine the content of calcium carbonate present in a 0.125 g eggshell sample. The sample was dissolved in a 50.00 mL of 0.200 M of hydrochloric acid, first standard reagent. The next analysis is titration of the excess acid which required 32.12 mL of 0.250 M sodium hydroxide, the second reagent. Calculate the percentage by weight the purity of calcium carbonate in the eggshell sample. CaCO3 + 2HCI CaCl₂ + CO₂ + H2₂O
INTRODUCTION LABORATORY SIMULATION 1) Calculate the pH of a solution prepared by dissolving 2.35 g of sodium acetate, CH3COONa, in 78.0 mL of 0.10 Macetic acid, CH;COOH(aq). Assume the volume change upon dissolving the sodium acetate is negligible. Ka of CH3COOH is 1.75 x 10-5. pH E METHODS O RESET P MY NOTES A LAB DATA SHOW LABELS