Stoichiometry and the Ideal Gas Law

Stoichiometry and the Ideal Gas Law - Stoichiometry and the...

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Stoichiometry and the Ideal Gas Law by Megan Lawless Lab Instructor: Mr. Hoch October 19, 2007
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Results and Discussion: The purpose of this lab was to implement a procedure capable of determining the identity of an unknown nitrate salt. The procedure involved the ideal gas law PV=nRT and the reaction between sulfamic acid and a nitrate salt MNO 2 ( aq ) + HSO 3 NH 2 ( aq ) MHSO 4 ( aq ) + H 2 O ( l ) + N 2 ( g ) In order to find the identity of the nitrate salt, the pressure, volume, and temperature of the nitrogen gas produced had to be found. An apparatus was set up to measure these values. The reaction took place in a 250 mL Erlenmeyer flask. The nitrogen gas produced exited the flask through a tube and was released into a 500 mL Florence flask that was filled nearly full with water. As the gas entered, water was displaced and sent through another tube into a 600 mL beaker. Therefore, the amount of nitrogen produced in the reaction was equal to the volume of water displaced into the beaker. The volume was found by weighing the beaker before the experiment and after, subtracting the final mass from the initial, and dividing the mass of the water by the density of water at 25°C.
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