Formula of a Hydrate Lab. By performing this lab, we will be able to find the molar amount of water in the compounds magnesium sulfate and copper sulfate.

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Patty Lopez

Hacker 6th Period

Formula of a Hydrate Lab

Lab Members: Patty Lopez, Gaby Calderon, Magali Garcia

Dates the lab was performed: November 4th and 5th

Purpose:

  • By performing this lab, we will be able to find the molar amount of water in the compounds magnesium sulfate and copper sulfate. By heating the compound, the heat will evaporate the waters of hydration, which will allow us to find the formula of the unknown hydrated salts.

 

Hypothesis:

  • If we heat the hydrated salts, then the hydrates will evaporate and we will be able to find the formula of the hydrated salts.

Materials:

  • 1 ring stand
  • 1 ring
  • Crucible tongs
  • Crucible and cover
  • Clay triangle
  • Small dropper
  • Bunsen burner
  • Matches
  • Lab balance
  • Watch glass
  • ~1g. CuSO4 x 5H2O
  • ~2-3g. MgSO4 x H2O
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Procedure:

  1. Mass a crucible and record in data table.
  2. Place about 2 grams of the hydrate in the crucible and record the mass of the crucible, cover and hydrate salt.
  3. Gently heat the crucible and its contents for about 10 minutes.
  4. During the last minute of hearing remove the cover so that any moisture which has collected on the underside of the cover can evaporate.
  5. When the crucible has cooled completely, determine the mass of the crucible,  cover and contents.
  6. Replace the cover and heat the crucible for 5 minutes removing the cover for ...

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