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2 cards from this section. Quick, good the night before a test.
What is the main purpose of quantitative analysis in organic chemistry?
Think about how we analyze organic compounds.
Name one method used to estimate nitrogen in organic compounds.
Recall the names of the methods we discussed.
What does quantitative analysis determine in organic compounds?
Think about what aspect of a compound we can measure.
True or False: The Kjeldahl method can be used for estimating nitrogen in compounds containing nitro groups.
Recall the limitations of the Kjeldahl method.
A sample of compound X weighs 0.5 g when combustion yields 0.4 g of CO₂ and 0.2 g of H₂O. Calculate the mass percent of carbon and hydrogen.
Make sure you remember the conversions from CO₂ and H₂O to C and H.
In an analysis, a nitrogenous compound produced 50 mL of nitrogen gas at 25°C and 750 mmHg. Calculate the percentage of nitrogen in the compound.
Check the adjustment for atmospheric pressure to get the actual pressure of gas collected.
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