Stoichiometry and the Ideal Gas Law

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

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Results and Discussion: The identity of a nitrite salt (ID: 6370) was determined by reacting sulfamic acid (HSO 3 NH 2 ) and a nitrite salt (MNO 2 ), where M represents a cation. The reaction utilized I this experiment was MNO 2 (aq) + HSO 3 NH 2 (aq) -> MHSO 4 (aq) + H 2 O (l) + N 2 (g) The ideal gas law was used to ultimately determine the number of moles of the nitrite salt but to do so, a number of other factors needed to be determined first. The volume of nitrogen gas produced in the reaction was obtained by measuring the mass of water it displaced in a beaker. We were to assume that the volume of displaced water is equivalent to the amount of displaced nitrogen gas. The calculation to determine the volume of water and consequently the nitrogen gas follows: Mass of water and beaker – Mass of beaker = Mass of water 444.8 g – 179.798 g = 265.002 g = mass of water To find the volume, the equation for density was used. The calculation follows: Density = mass/volume 1.00 g/ml = 265.002 g / volume Volume of water = 265.002 ml = .265 L

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