Composition Of Cathydrates Lab Report
LAB 12
PERCENTAGE COMPOSITION OF HYDRATES
Pre-Lab Questions:
See page(s) 1 for calculations
Purpose: The purpose of this lab was to learn how to determine the percent of water in a hydrate.
Materials:
Evaporating dish Ring stand
Wire gauze Burner
Crucible tongs Triple beam balance
Copper(II) sulfate penta-hydrate Spatula
Glass stirring rod Distilled water
Procedures:
See page(s) 1 and 2, for procedure steps 1-11
Observations and Data:
1. Mass of evaporating dish 21.48g
2. Mass of dish + hydrate 23.48g
3. Mass of dish + anhydrous salt 22.75g
Calculations:
See page(s) 3 and 4, for questions 1- 5
Questions for Discussion:
1. Sources of error in this lab could be caused by measuring the wrong amount of chemicals with the spatula, having left over water in the evaporating dish from not heating it well enough to evaporate all the water and reading the triple beam balance wrong or not knowing for to use a triple beam balance. You can prevent these types of mistakes by double checking your work and reading the directions carefully. …show more content…
To calculate the percent composition of a component in a compound you have to find the molar mass of the compound by adding up the masses of each atom in the compound using the periodic table or a molecular mass calculator.
Calculate the mass due to the component in the compound you are for
PERCENTAGE COMPOSITION OF HYDRATES
Pre-Lab Questions:
See page(s) 1 for calculations
Purpose: The purpose of this lab was to learn how to determine the percent of water in a hydrate.
Materials:
Evaporating dish Ring stand
Wire gauze Burner
Crucible tongs Triple beam balance
Copper(II) sulfate penta-hydrate Spatula
Glass stirring rod Distilled water
Procedures:
See page(s) 1 and 2, for procedure steps 1-11
Observations and Data:
1. Mass of evaporating dish 21.48g
2. Mass of dish + hydrate 23.48g
3. Mass of dish + anhydrous salt 22.75g
Calculations:
See page(s) 3 and 4, for questions 1- 5
Questions for Discussion:
1. Sources of error in this lab could be caused by measuring the wrong amount of chemicals with the spatula, having left over water in the evaporating dish from not heating it well enough to evaporate all the water and reading the triple beam balance wrong or not knowing for to use a triple beam balance. You can prevent these types of mistakes by double checking your work and reading the directions carefully. …show more content…
To calculate the percent composition of a component in a compound you have to find the molar mass of the compound by adding up the masses of each atom in the compound using the periodic table or a molecular mass calculator.
Calculate the mass due to the component in the compound you are for