Unknown elemental metal was reacted with Hydrochloric Acid. It was determined that this reaction evolved Hydrogen gas and left the metal in solution in the 2+ oxidation state. The Unknown metal was then subjected to the same test as Magnesium in the “Molar Mass of Magnesium” lab. After some adjustments to get the volume of gas collected in the right range, the following results were obtained: Mass of Metal used = 0.3682 g P (atmospheric) = 761.1 mm Hg
Unknown elemental metal was reacted with Hydrochloric Acid. It was determined that this reaction evolved Hydrogen gas and left the metal in solution in the 2+ oxidation state. The Unknown metal was then subjected to the same test as Magnesium in the “Molar Mass of Magnesium” lab. After some adjustments to get the volume of gas collected in the right range, the following results were obtained: Mass of Metal used = 0.3682 g P (atmospheric) = 761.1 mm Hg
Chapter5: Gases
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Problem 161IP: In the presence of nitric acid, UO2+ undergoes a redox process. It is converted to UO22+ and nitric...
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n Unknown elemental metal was reacted with Hydrochloric Acid. It was determined that this reaction evolved Hydrogen gas and left the metal in solution in the 2+ oxidation state. The Unknown metal was then subjected to the same test as Magnesium in the “Molar Mass of Magnesium” lab. After some adjustments to get the volume of gas collected in the right range, the following results were obtained:
Mass of Metal used = 0.3682 g
P (atmospheric) = 761.1 mm Hg
Temperature of gas = 21.6 degrees C
Volume of gas collected = 67.5 ml
Difference in height of solution levels in the buret and beaker = 163.0mm
Vapour pressure of H20 at gas temperature = 19.349 mm Hg
Some Constants:
R = 0.0820575 L*Atm/mol/K = 62.3637 L*mmHg/mol/K
dsolution = 1.00g/ml
dHg = 13.6 g/ml
From this data, calculate and report the molar mass of the unknown metal with correct significant figures and unit
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