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October 26, 2014

Homework Help: Chemistry

Posted by Sharon on Tuesday, February 28, 2012 at 6:55pm.

Indicate how each of the following would affect the value of the absorbance (too high, too low, or not effect) of the indicated solution.
I really need help. I do not understand these questions!
This is from a chemistry activity to determine the unknown concentration of an Erythrosin B solution by using a spectrophotometer.

a. A student prepares solution A as instructed and pours it into a wet beaker.

b. A student rinses the 10.00 mL pipet only with DI water in the preparation of D (but does the rest of the procedure as instructed).

c. A student fills the volumetric flask containing solution B so that the bottom of the meniscus is below the mark on the flask (but does the rest of the procedure as instructed).

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