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Name: Formula of a Hydrate Lab Chemistry Date: Per._ 6. The following data were obtained when a sample of barium chloride was analyzed as described in the procedure section. Calculate the following from the data below. Mass of empty test-tube: Mass of test-tube and hydrate (before heating): Mass of test-tube and anhydrous salt (after heating): a. Mass of hydrate = (mass test-tube and hydrate) - (mass empty test-tube) = 18.42 g 20.75 g 20.41 g b. Mass of water loss = (mass of test-tube and hydrate) - (mass test-tube and anhydrous salt) = c. Percent water in hydrate = (mass water loss / mass of hydrate) x 100 = 7. The general formula of barium chloride hydrate is BaCl₂'nH₂O, where n is the number of water molecules. a) Calculate the theoretical percent water for each value of n--divide the sum of the atomic masses due to the water molecules by the sum of all the atomic masses in the hydrate, and multiply the result by 100. Complete the table. b) Compare the percent water in the hydrate with the theoretical values calculated for different values of n. Complete the table c) What is the most likely formula for barium chloride hydrate? Explain.

Name: Formula of a Hydrate Lab Chemistry Date: Per._ 6. The following data were obtained when a sample of barium chloride was analyzed as described in the procedure section. Calculate the following from the data below. Mass of empty test-tube: Mass of test-tube and hydrate (before heating): Mass of test-tube and anhydrous salt (after heating): a. Mass of hydrate = (mass test-tube and hydrate) - (mass empty test-tube) = 18.42 g 20.75 g 20.41 g b. Mass of water loss = (mass of test-tube and hydrate) - (mass test-tube and anhydrous salt) = c. Percent water in hydrate = (mass water loss / mass of hydrate) x 100 = 7. The general formula of barium chloride hydrate is BaCl₂'nH₂O, where n is the number of water molecules. a) Calculate the theoretical percent water for each value of n--divide the sum of the atomic masses due to the water molecules by the sum of all the atomic masses in the hydrate, and multiply the result by 100. Complete the table. b) Compare the percent water in the hydrate with the theoretical values calculated for different values of n. Complete the table c) What is the most likely formula for barium chloride hydrate? Explain.

Introductory Chemistry: A Foundation
Introductory Chemistry: A Foundation
9th Edition
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Donald J. DeCoste
Chapter9: Chemical Quantities
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Name: Formula of a Hydrate Lab Chemistry Date: Per._ 6. The following data were obtained when a sample of barium chloride was analyzed as described in the procedure section. Calculate the following from the data below. Mass of empty test-tube: Mass of test-tube and hydrate (before heating): Mass of test-tube and anhydrous salt (after heating): a. Mass of hydrate = (mass test-tube and hydrate) - (mass empty test-tube) = 18.42 g 20.75 g 20.41 g b. Mass of water loss = (mass of test-tube and hydrate) - (mass test-tube and anhydrous salt) = c. Percent water in hydrate = (mass water loss / mass of hydrate) x 100 = 7. The general formula of barium chloride hydrate is BaCl₂'nH₂O, where n is the number of water molecules. a) Calculate the theoretical percent water for each value of n--divide the sum of the atomic masses due to the water molecules by the sum of all the atomic masses in the hydrate, and multiply the result by 100. Complete the table. b) Compare the percent water in the hydrate with the theoretical values calculated for different values of n. Complete the table c) What is the most likely formula for barium chloride hydrate? Explain.
Transcribed Image Text:Name: Formula of a Hydrate Lab Chemistry Date: Per._ 6. The following data were obtained when a sample of barium chloride was analyzed as described in the procedure section. Calculate the following from the data below. Mass of empty test-tube: Mass of test-tube and hydrate (before heating): Mass of test-tube and anhydrous salt (after heating): a. Mass of hydrate = (mass test-tube and hydrate) - (mass empty test-tube) = 18.42 g 20.75 g 20.41 g b. Mass of water loss = (mass of test-tube and hydrate) - (mass test-tube and anhydrous salt) = c. Percent water in hydrate = (mass water loss / mass of hydrate) x 100 = 7. The general formula of barium chloride hydrate is BaCl₂'nH₂O, where n is the number of water molecules. a) Calculate the theoretical percent water for each value of n--divide the sum of the atomic masses due to the water molecules by the sum of all the atomic masses in the hydrate, and multiply the result by 100. Complete the table. b) Compare the percent water in the hydrate with the theoretical values calculated for different values of n. Complete the table c) What is the most likely formula for barium chloride hydrate? Explain.
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