Chem lab 6 - Stoichiometry and the Ideal Gas Law by Alex...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Stoichiometry and the Ideal Gas Law by Alex Wittenberg Lab Instructor: Saba Khan October 23, 2009
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Results and Discussion : The purpose of the experiment was to devise and implement a procedure capable of determining the identity of an unknown nitrite salt. The general formula of the salt is MNO 2 , where M + is an alkali metal cation: Li + , Na + , K + , RB + . Salt 1 was used in this experiment. The procedure involved a reaction between sulfamic acid and a nitrite and the ideal gas law. The ideal gas law is: PV = nRT , where P is pressure, V is volume, n is number of moles, R is the universal gas constant (0.08206 atm × L / mol × K ), and T is temperature. The reaction formula is: MNO 2 ( aq ) + HSO 3 NH 2 ( aq ) ® MHSO 4 ( aq ) + H 2 O ( l ) + N 2 ( g ) . From this formula, it can be concluded that the moles of nitrogen gas produced are stoichiometrically related to the moles of the nitrite salt originally present. From the moles of the nitrite salt originally present and the mass of the sample, it is possible to identify the salt. To get the pressure of the nitrogen gas, the following formula
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

Chem lab 6 - Stoichiometry and the Ideal Gas Law by Alex...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online