Experiment 1 results:
mass of crucible 88g
mass of hydrate 93g
mass of salt 91.196g
1. Calculate the following:
a:mass of water in the hydrate sample (g)
b:number of moles of water in the sample
c:mass of pure salt in the sample (g)
d:number of moles of salt in the sample
e:molar ratio of water to salt in the sample
2. From your calculations, what is the empirical formula of copper sulfate hydrate?
3.4. Write the equation for the decomposition of the hydrate, CuSO4*XH2O.
Experiment 2 results:
mass of crucible: 88g
mass of hydrate and crucible: 93g
To answer question 1, we need to perform some calculations based on the given data.
a) To determine the mass of water in the hydrate sample, subtract the mass of the crucible and the mass of the pure salt from the mass of the hydrate sample:
Mass of water = Mass of hydrate - Mass of crucible - Mass of salt
Mass of water = 93g - 88g - 91.196g
b) To calculate the number of moles of water in the sample, we need to use the molar mass of water. The molar mass of water (H2O) is approximately 18.015 g/mol.
Number of moles of water = Mass of water / Molar mass of water
c) To determine the mass of pure salt in the sample, subtract the mass of the water and the mass of the crucible from the mass of the hydrate and crucible:
Mass of salt = Mass of hydrate and crucible - Mass of water - Mass of crucible
d) To calculate the number of moles of salt in the sample, we need to use the molar mass of the salt. In this case, the salt is copper sulfate (CuSO4). Its molar mass is approximately 159.609 g/mol.
Number of moles of salt = Mass of salt / Molar mass of salt
e) The molar ratio of water to salt in the sample can be determined by dividing the number of moles of water by the number of moles of salt.
Now, I will calculate the values for questions 1a to 1e for you:
a) Mass of water = 93g - 88g - 91.196g = [CALCULATE THIS]
b) Number of moles of water = Mass of water / Molar mass of water = [CALCULATE THIS]
c) Mass of pure salt = Mass of hydrate and crucible - Mass of water - Mass of crucible = [CALCULATE THIS]
d) Number of moles of salt = Mass of salt / Molar mass of salt = [CALCULATE THIS]
e) Molar ratio of water to salt = Number of moles of water / Number of moles of salt = [CALCULATE THIS]
To determine the empirical formula of copper sulfate hydrate (question 2), you will need to determine the ratios of the elements present in the compound. This can be done by comparing the number of moles or the mass ratios of copper (Cu), sulfur (S), oxygen (O), and hydrogen (H). The empirical formula represents the simplest whole number ratio of atoms in a compound.
To determine the empirical formula, divide the number of moles or mass of each element by the smallest number of moles or mass obtained, and then simplify the ratio if needed.
As for question 3, you will need to provide additional information about the compound's decomposition. The given formula "CuSO4*XH2O" implies the presence of water in the hydrate, but without the value of "X," it is impossible to write the balanced equation for the decomposition. Please provide the value of "X" to proceed with writing the equation.