Pre-lab Quiz#8

Pre-lab Quiz#8 - 2. Warm Complex Formation When making the...

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1. Cool Complex Formation   If the cobalt-quinoxoline complex is formed at room temperature instead of 60°C, then    Student Response Value Correct Answer Feedback 1.  The quinoxoline won't  dissolve, so no  complex will form      2. Complex formation  will be slow, so  absorbance values  will be low and  concentration will be  underestimated 100%       3. Complex formation  will be fast, so  absorbance values  will be high and  concentration will be  overestimated      4. No problem will  occur; accuracy is not  a problem as long as  complexation occurs  between 10°C and  90°C      Score: 1/1 
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Unformatted text preview: 2. Warm Complex Formation When making the quinoxoline complex, if the temperature is too high, then Score: 1/1 3. Spectrometry In determining the cobalt and nickel complex concentrations, what wavelengths should be used? Score: 1/1 4. Co/Ni Working Curve Blank One blank is prepared for use with both working curves. Is this really optimal? Score: 1/1 5. Simultaneous vs. Separate In general, when would you expect separations to give better results than simultaneous measurements? Score: 1/1...
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Pre-lab Quiz#8 - 2. Warm Complex Formation When making the...

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