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1. Solve the following queries related to gravimetric analysis. Make sure to show full and complete procedure. a) The water in a 10 g sample of mayonnaise is determined by the Bidwell-Sterling method (distillation). The collected water measured 3.45 mL at 25 ºC; the density of water at this temperature is 0.997. Calculate the percentage of water in the sample. b) A sample, mixture of AgCl and AgBr, weighing 0.8 g, loses 0.1066 g when heated with chlorine. Calculate the weight of AgCl and AgBr it contains. c) A chromite sample weighing 0.8 g is melted with sodium peroxide. The melt is leached with water, boiled, and filtered, to separate the iron in the form of hydrated oxide. The filtrate, which contains chromate, is neutralized and the chromium is precipitated as Ag₂CrO4. The precipitate is washed, dissolved in nitric acid and the silver is precipitated in the form of AgCl, which weighs 0.3264 g. Calculate the percentage of a) Cr and b) Cr₂O3 in the sample.

1. Solve the following queries related to gravimetric analysis. Make sure to show full and complete procedure. a) The water in a 10 g sample of mayonnaise is determined by the Bidwell-Sterling method (distillation). The collected water measured 3.45 mL at 25 ºC; the density of water at this temperature is 0.997. Calculate the percentage of water in the sample. b) A sample, mixture of AgCl and AgBr, weighing 0.8 g, loses 0.1066 g when heated with chlorine. Calculate the weight of AgCl and AgBr it contains. c) A chromite sample weighing 0.8 g is melted with sodium peroxide. The melt is leached with water, boiled, and filtered, to separate the iron in the form of hydrated oxide. The filtrate, which contains chromate, is neutralized and the chromium is precipitated as Ag₂CrO4. The precipitate is washed, dissolved in nitric acid and the silver is precipitated in the form of AgCl, which weighs 0.3264 g. Calculate the percentage of a) Cr and b) Cr₂O3 in the sample.

Chemistry
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
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Show full and complete procedure HANDWRITTEN only. Please answer a) b) and c). Note they are subparts of the same question 

1. Solve the following queries related to gravimetric analysis. Make sure to show full and complete procedure. a) The water in a 10 g sample of mayonnaise is determined by the Bidwell-Sterling method (distillation). The collected water measured 3.45 mL at 25 ºC; the density of water at this temperature is 0.997. Calculate the percentage of water in the sample. b) A sample, mixture of AgCl and AgBr, weighing 0.8 g, loses 0.1066 when heated with chlorine. Calculate the weight of AgCl and AgBr it contains. c) A chromite sample weighing 0.8 g is melted with sodium peroxide. The melt is leached with water, boiled, and filtered, to separate the iron in the form of hydrated oxide. The filtrate, which contains chromate, is neutralized and the chromium is precipitated as Ag₂CrO4. The precipitate is washed, dissolved in nitric acid and the silver is precipitated in the form of AgCl, which weighs 0.3264 g. Calculate the percentage of a) Cr and b) Cr₂O3 in the sample.
Transcribed Image Text:1. Solve the following queries related to gravimetric analysis. Make sure to show full and complete procedure. a) The water in a 10 g sample of mayonnaise is determined by the Bidwell-Sterling method (distillation). The collected water measured 3.45 mL at 25 ºC; the density of water at this temperature is 0.997. Calculate the percentage of water in the sample. b) A sample, mixture of AgCl and AgBr, weighing 0.8 g, loses 0.1066 when heated with chlorine. Calculate the weight of AgCl and AgBr it contains. c) A chromite sample weighing 0.8 g is melted with sodium peroxide. The melt is leached with water, boiled, and filtered, to separate the iron in the form of hydrated oxide. The filtrate, which contains chromate, is neutralized and the chromium is precipitated as Ag₂CrO4. The precipitate is washed, dissolved in nitric acid and the silver is precipitated in the form of AgCl, which weighs 0.3264 g. Calculate the percentage of a) Cr and b) Cr₂O3 in the sample.
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We need to find the percentage of water using the given data.

Volume of water collected =3.45 mL and the density of water is 0.997 g/mL

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