The Molar Volume of Hydrogen

Data Collection and Processing

Raw Data

Table 1- this table shows the results from our group’s experiment

Uncertainties

  • Length- ±0.05cm
  • Volume- ±0.1cm3
  • Mass- ±0.01g

  1. Calculate the mass and number of moles of magnesium used in your experiment.

Length of Magnesium- 2cm

Moles of Magnesium Used        =        mass/ molecular mass

                                =        0.043 / 24.31

                                =        0.0017689

Length of Magnesium- 3.5cm

Moles of Magnesium Used         =        mass/ molecular mass

=        0.076 / 24.31

                                =        0.0031263

  1. From the partial pressure of water supplied calculate the partial pressure of hydrogen using the formula.
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P Atmosphere         =        P Hydrogen + P Water

102.5kPa         =         P Hydrogen + 2.1kPa

P Hydrogen        =        102.5kPa – 2.1kPa

P Hydrogen        =        100.4kPa

Processed Data

Table 2- this table shows the results of the class data

Table 3- this table shows the length, mass and moles of Magnesium that were used.

  1. The volume you measured under the laboratory conditions must be changed. Use the combined gas law to calculate the volume the hydrogen would occupy under STP conditions.

  1. Write a balanced equation for the reaction of magnesium with hydrochloric acid. From the ...

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