Chm 206 Spring 2016 Expt 4 Equilibrium Constant, Kc
Note: Enter data carefully! Three points are given for significant figures, units, numerical format, and lab station format.
1. Enter your name(s) *
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2. Enter your lab station *
(Example: 7A or 4A, etc)
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3. Section *
4. (2 pts) Enter the absorbance of your Green Solution at 616 nm.
(Absorbance has no units)
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5. (2 pts) Enter the absorbance of your Blue Solution at 616 nm.
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6. (1 pt) Enter the pH of the solution as given to you by your TA or me.
(pH has no units)
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7. (2 pts) What is [H3O+] that you calculated from the pH?
Use the format required for Excel. For example: 7.9E-6 or 4.2E4. Include units!
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8. (3 pts) What is the value of the equilibrium constant, Kc, that you determined?
Use the format required for Excel. For example: 7.9E-6 or 4.2E4. K is unitless.
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9. (2 pts) Enter the pK as explained in your lab manual.
Example 8.11 or 6.07, etc. Values of pKc are unitless
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Most numbers should be entered in "normal format" (for example, 0.0123). Numbers entered as exponentials must be in the format 1.23E4 or 5.67E-6 (note no spaces!) *
Double check your answers to Questions 7 and 8!
Carefully enter your CU e-mail address in the format ABC12345@creighton.edu *
Double check what you entered. Errors will result in no feedback report.
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Carefully enter your lab partner's CU e-mail address in the format ABC12345@creighton.edu
Check entry! I do not correct erroneous e-mail addresses.
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