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Unformatted text preview: and 78.5mg of a white solid precipitate are isolated. What is the concentration of the sodium hydroxide added in the titration. 3. If.466M H 2 SO 4 is added to KOH, and the volume of sulfuric acid added to the potassium hydroxide to reach equivalence is precisely twice the initial KOH volume, what is the KOH molarity? 4. A 8.678g sample of an unknown compound containing C, H, O, and N is combusted with excess oxygen in a 7.09L container. Once the reaction is complete, it is cooled to a temperature of 80 degrees celsius and the remaining oxygen gas is selectivey removed. After the oxygen is removed, the partial pressures of the remaning nitrogen gas (N 2 ) is .2905atm, the partial pressure of the carbon dioxide gas is 1.155atm, and finally, the partial pressure for the water vapor is 2.04atm. What is the empirical formula for the compound?...
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- Fall '08