1. All answers to be entered via short answer are in the numerical format and presented up to the 3rd decimal place. Add trailing zeros if necessary, to complete your answer. NO NEED TO INCLUDE THE UNIT.For uniformity of answers, please be guided by the following examples:If your answer is 5.627594, enter 5.628If your answer is 3.129934, enter 3.130If your answer is 8.38, enter 8.380If your answer is 1.2, enter 1.200If your answer is 25, enter 25.000If your answer is less than the value of 1, always place a zero before the decimal point(example: 0.5, enter 0.500)2. In cases for answers in the exponential format, please be guided by the following examples and format:Do not convert your answer to decimal formatIf your answer from the calculator is 1.23454566 x 10E-4, enter 1.235x10^-4 (no spaces in between)If your answer from the calculator is 7.379566 x 10E-5, enter 7.38x10^-5 (no spaces in between)3. For the atomic weights, it should be rounded to the nearest whole number.Example: Hydrogen: 1.00784 = 1.000Based from the given problem, What is the molecular weight of potassium biphthalate (C8H5KO4)? Part 1: AlkalimetryPreparation and Standardization of IN Sodium HydroxideA. PreparationDissolve 14.7 grams of sodium hydroxide pellets in 100 ml of carbon-dioxide free water.Cool the solution to room temperatureAdd a freshly prepared saturated solution of barium hydroxide until no more precipitate forms.Shake and filter.Transfer it in a 250 ml volumetric flask, then add sufficient quantity of carbon dioxide free water tomake 250 ml.B. StandardizationWeigh accurately about 5 grams of potassium biphthalate, previously crushed lightly and dried at120 degrees Celsius for 2 hours and dissolve it in 75 ml of carbon dioxide free water.Add 2 drops of phenolphthalein TS.Transfer 50 ml of the sodium hydroxide solution in a Buret and titrate the potassium biphthalatesolution with the sodium hydroxide solution until it produces a permanent pink color.Note: 24 ml NaOH solution was used to change the color from colorless to pink color*Titer Value: Each ml of 1 N NaOH is equivalent to 204 mg of Potassium biphthalateTable:DataWt of KHP (g)MW of KHPmeg of KHPVolume of sodium hydroxide solution used (ml)NormalityTrial 15.000 g24.000

Given: Data Trial wt of KHP 5g MW of KHP meg of KHP Volume of Sodium hydroxide…

Answered: Table: Data Wt of KHP (g) MW of KHP…

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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1. All answers to be entered via short answer are in the numerical format and presented up to the 3rd decimal place. Add trailing zeros if necessary, to complete your answer. NO NEED TO INCLUDE THE UNIT. For uniformity of answers, please be guided by the following examples: If your answer is 5.627594, enter 5.628 If your answer is 3.129934, enter 3.130 If your answer is 8.38, enter 8.380 If your answer is 1.2, enter 1.200 If your answer is 25, enter 25.000 If your answer is less than the value of 1, always place a zero before the decimal point (example: 0.5, enter 0.500) 2. In cases for answers in the exponential format, please be guided by the following examples and format: Do not convert your answer to decimal format If your answer from the calculator is 1.23454566 x 10E-4, enter 1.235x10^-4 (no spaces in between) If your answer from the calculator is 7.379566 x 10E-5, enter 7.38x10^-5 (no spaces in between) 3. For the atomic weights, it should be rounded to the nearest whole number. Example: Hydrogen: 1.00784 = 1.000 Based from the given problem, What is the molecular weight of potassium biphthalate (C8H5KO4)?

Part 1: Alkalimetry
Preparation and Standardization of IN Sodium Hydroxide
A. Preparation
Dissolve 14.7 grams of sodium hydroxide pellets in 100 ml of carbon-dioxide free water.
Cool the solution to room temperature
Add a freshly prepared saturated solution of barium hydroxide until no more precipitate forms.
Shake and filter.
Transfer it in a 250 ml volumetric flask, then add sufficient quantity of carbon dioxide free water to
make 250 ml.
B. Standardization
Weigh accurately about 5 grams of potassium biphthalate, previously crushed lightly and dried at
120 degrees Celsius for 2 hours and dissolve it in 75 ml of carbon dioxide free water.
Add 2 drops of phenolphthalein TS.
Transfer 50 ml of the sodium hydroxide solution in a Buret and titrate the potassium biphthalate
solution with the sodium hydroxide solution until it produces a permanent pink color.
Note: 24 ml NaOH solution was used to change the color from colorless to pink color
*Titer Value: Each ml of 1 N NaOH is equivalent to 204 mg of Potassium biphthalate
Table:
Data
Wt of KHP (g)
MW of KHP
meg of KHP
Volume of sodium hydroxide solution used (ml)
Normality
Trial 1
5.000 g
24.000

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