Finding the Value of 'n' in CuSO4*nH20 Lab

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In summary, the purpose of the CuSO4*nH20 lab is to determine the value of 'n' in the chemical formula CuSO4*nH20. The value of 'n' is determined by measuring the mass of the hydrated copper sulfate compound and then heating it to remove the water molecules. The equipment needed for the lab includes a balance, crucible and lid, Bunsen burner, and a desiccator. Safety precautions should be taken during the lab, such as wearing protective gear and following proper disposal procedures. The value of 'n' can vary for different samples of CuSO4*nH20 due to variations in purity and environmental factors, and multiple trials are often conducted to ensure accurate results.
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JEscribir
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Doing a lab on the computer we received the data of a hydrate to be .1989 g and the dehydrate .1271 g last mass of water evolved from reaction .0718g. We heated CuSO4*nH20 and we needed to find n. I changed the anhydrate and water to moles then dividing the number by the smallest amount of moles getting n to be 5 by dividing .000796 mol./.00398 mol. The name of the chemical formula ends up being Copper(II) Sulfate Pentahydrate. Overall we assume 100% yield. Did I do this problem right?
 
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Looks good.
 
  • #3
Score, I wasn't to sure, but thanks for the confirmation.
 

1. What is the purpose of the CuSO4*nH20 lab?

The purpose of the CuSO4*nH20 lab is to determine the value of 'n' in the chemical formula CuSO4*nH20, which represents the number of water molecules associated with each copper sulfate molecule.

2. How is the value of 'n' determined in the lab?

The value of 'n' is determined by measuring the mass of the hydrated copper sulfate compound and then heating it to remove the water molecules. The difference in mass before and after heating is used to calculate the value of 'n'.

3. What equipment is needed for the CuSO4*nH20 lab?

The equipment needed for the lab includes a balance, crucible and lid, Bunsen burner, and a desiccator. Other materials such as hydrated copper sulfate, tongs, and a heat-resistant mat may also be necessary.

4. What safety precautions should be taken during the lab?

Some safety precautions to take during the lab include wearing protective goggles and a lab coat, using tongs when handling hot objects, and being cautious when using the Bunsen burner. It is also important to follow proper disposal procedures for any chemicals used in the lab.

5. Can the value of 'n' vary for different samples of CuSO4*nH20?

Yes, the value of 'n' can vary for different samples of CuSO4*nH20 due to variations in the purity of the compound and the amount of water molecules that may be present from environmental factors. This is why multiple trials are often conducted in the lab to ensure accurate results.

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