• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

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.

Extracts from this document...

Introduction

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. ...read more.

Middle

7. Cool and determine the mass of the crucible, cover and its contents. 8. This last mass should agree with the previous mass within plus or minus0.01 grams. Note: if it does not, repeat this heating until a constant mass is reached. This is called heating a constant mass and is the only way of insuring that the reaction is complete and all the waters of hydration have been driven off (dehydrated). Do not heat the crucible to red hot, or the salt's sulfate portion will start to break down. This will give you yellowish contents. If this happens, you have to start over! Results: Copper Sulfate Mass Observations Crucible, cover and paper clip 17.8g. Crucible, cover, paper clip, and hydrated salt 19.8g. ...read more.

Conclusion

of MgSO4 1.0g.H2O x 1 mol =.056 mol H2O 18.0g. 1.0g. MgSO4 x 1mol = .0083 mol MgSO4 120.4g. .056 = 7 .0083 .0083 =1 .0083 Formula: MgSO4 x 7H2O Conclusion: In the Formula of a Hydrate Lab, our hypothesis was correct. When we heated the hydrated salts, the hydrates evaporated and we were able to find the formula of the salts. When we heated the compounds, we got a formula of CuSO4 x 6H2O for the copper sulfate, and MgSO4 x 7H2O for the magnesium sulfate. Our copper sulfate formula was very close to the answer of CuSO4 x 5H2O, but by heating the hydrate for another minute, or removing the crucible cover for a minute longer, we would have achieved that number by allowing the hydrate to evaporate the other waters of hydration. Although we don't know the correct answer for the magnesium sulfate, MgSO4 x 7H2O was our best guess. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Chemistry section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related International Baccalaureate Chemistry essays

  1. Experiment - The Empirical Formula of Magnesium Oxide

    From both Table 3.1 and Graph 1, it can be seen that the absolute uncertainties of the mass and the number of moles of oxygen were extremely large, indicating the unreliability of the experiment results. Comparing to Graph 1, the correlation coefficient in Graph 2 improved after the outlier point

  2. Butane Molar Mass Lab

    14.3 ~69.53 g/mol Trial 3 0.030 0.976 15.8 ~47.20 g/mol Average 0.033 0.976 14.5 ~56.57 g/mol mi = initial mass of lighter mf = final mass of lighter ?m = mass of butane Pressure of Butane: 30.02 inHg (25.4 mmHg / 1 inHg)

  1. Aspirin Tablets Lab

    in the experiment was the assumption that the additional substances in the tablet did not react in the reaction of hydrolysis nor in titration.

  2. Lab 1 - Determining Hydrate Formulas

    Sulfate (ZnSO4) after 2nd heating 17.30g There is none because I used a digital device to determine the mass, so I can't have possibly made any mistakes. Mass given by weighing machine in grams (g) � 0.005g *Percent of Uncertainty = (absolute uncertainty)

  1. Rates of Reaction Lab

    The reaction at 1M hydrochloric acid was also very slow to start. The rate by which hydrogen gas was produced and rapidity of effervescence had increased by a lot at 2M of hydrochloric acid. As hydrogen gas was produced, it was being collected in the gas syringe.

  2. Hesss Law Lab, use Hesss law to find the enthalpy change of combustion of ...

    = 602- 602 = 0 = Percentage error for the third trial: =( table value - experimental value) = 602- 562 = 40 = It is very clear from the above calculations that the most accurate experiment I performed was the 2nd one.

  1. Electrolysis of copper sulphate

    The experiment was not successful in confirming the hypothesis. The anomalous results obtained are likely to have been caused due to both, systematic and random errors that occurred and were noted as follows. Random errors Random errors occur as inconsistent and unpredictable changes in the experiment (i.e.

  2. PURPOSE To determine the amount of water of crystallization in one mole of a ...

    = 1.4 / 18 =0.08 Moles of CuSO4 = mass / Mr = 2.6 / 159.62 = 0.016 Moles of hydration = moles (water) / moles (CuSO4) = 0.08 / 0.016 = 5 1. Percentage composition of water Molar mass (CuSO4.5H2O)

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work