Ans. Number 2 NOTE: PRESENT DETAILED SOLUTION1. A 5.0 gram sample of rock containing CuSO4 was analyzed for its sulfate content. Fifty (50)ml deionized water was added to dissolve the sample. A solution of 0.25 M BaCl₂ solutionI was added slowly until all the sulfate were precipitated. The mixture was filtered usingashless filter paper. After ignition in a furnace, cooled and oven-dried, the precipitateobtained weighed 1.2034 grams. Calculate the % Sulfate in the rock sample.2. Describe the preparation of 500 ml of 0.15M HCI using concentrated hydrochloric acidsolution.3. A solution of sodium hydroxide was prepared by dissolving 40.0 grams of sodiumhydroxide pellets to prepare one (1) liter of the solution. During standardization, 35.5 mlof the prepared sodium hydroxide solution was required to titrate 0.500 gram KHP toreached the end point using phenolphthalein indicator. What is the true concentration ofthe sodium hydroxide solution? What is the % Error?4. A 5.0 gram sample containing sodium carbonate was dissolved in 50 ml distilled water.Two drops phenolphthalein indicator was added turning the solution dark pink. Then 20ml of 0.10 M HCI solution was added turning the mixture colorless. Titration required 15ml of the 0.15 M NaOH standard solution to reached the endpoint which is faint pinkCalculate the % analyte in the sample.a. Write the equation of the reaction of the sample and HCIb. Write the reaction equation between the excess acid and NaoH.

Answered: Image /qna-images/answer/feb6035d-3ef5-4a8a-badd-7dc066c3d6b3.jpg

Answered: weighed 1.2034 grams. Calculate the %…

weighed 1.2034 grams. Calculate the % Sulfate in the rock sample. Describe the preparation of 500 ml of 0.15M HCI using concentrated hydrochloric solution.

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter17: Electrochemistry

Section: Chapter Questions

Problem 80AP

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