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This question was created from Lab 5 Identification of a Compound https://www.coursehero.com/file/17925063/Lab-5-Identification-of-a-Compound/

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CHEM 1111
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Experiment 5
Experiment 5 Prelab Assignment
1. The mass of an empty evaporating dish and watch glass is 62.549 g. After the addition
of an unknown, the mass was 63.089 g. The evaporating dish and unknown were
heated strongly for 10 minutes. After cooling, the mass of the evaporating dish and
sample were found to be 62.928 g. A sample of the unknown was also submitted to a
flame test, and found to produce a violet flame. Is the unknown NaHCO;, NazCO3,
KHCO3, or K2CO;? Explain the reasoning used to arrive at your answer.

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Our salt is K 2 CO 3 .... View the full answer

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