b If 180 g of NO were actually produced what is the percent yield of the

# B if 180 g of no were actually produced what is the

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b. If 180 g of NO were actually produced, what is the percent yield of the reaction? 2.) What mass of P4is needed to produce 62g of PF3if the reaction has a 76.3% yield? 3.) If isotopically pure C 14 and O 18 formed only carbon monoxide, draw a picture of what the mass spectrometer output would be
Quantitative Analysis: Gravimetric Analysis- Describe the five steps for gravimetric analysis 1. 2. 3. 4. 5. Now think of examples of instances where this would be an appropriate type of analysis A 0.4054 g solid organic sample containing covalently bound bromide and no other halogens was placed in a porcelain crucible with about one gram of fresh sodium metal. In a process known as sodium fusion, the mixture was heated in a furnace to 450°C which charred and vaporized the organic portion of the molecule and converted the covalent bromide into sodium bromide. Excess sodium was decomposed by adding small portions of water which also dissolved the sodium bromide. The clear solution was quantitatively transferred to a beaker, acidified with dilute nitric acid, and diluted to about 50 mL. A 6 mL quantity of 0.1 M AgNO3 was added to the solution and the mixture heated to about 60°C for an hour to age and digest the precipitate. After filtering, the mass of the silver bromide produced was determined to be 37.8 mg. What is the percentage by mass bromine in the organic compound? Volumetric Analysis- Titrations What are titrations used for? How are titrations performed? (5 steps) 1.) 2.) 3.) 4.) 5.)
Titration Vocab: Analyte: Titrant: Buret: Equivalence Point: Solutions: Two parts (at least), solute and solvent Solvent- Solute- If I have a 345ml solution of 1.68M NaCl(aq) and I boil it until the volume is 280ml, what is the final concentration? How much 0.5M HCl can be made by diluting 1L of 10M HCL? Reminders: Keep up with Aleks, Ask questions before the next exam is coming up, you want to minimize the amount of topics you’re uncomfortable with when you have to start studying. Stay positive, it’s only the beginning of the semester!

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• Fall '08
• Kenney

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