abbypark0804
22.02.2021 •
Chemistry
An analytical chemist is titrating 245.6 mL of a 0.6400 M solution of ethylamine C,HNH) with a 0.9000 M solution of HNO3. The pK, of ethylamine is
3.19. Calculate the pH of the base solution after the chemist has added 17.7 ml of the HNO, solution to it.
Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of HNO, solution added.
Round your answer to 2 decimal places.
pH ?
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Ответ:
One reason, that water did not boil at 100 C could be the atmospheric pressure
Calculate the percent error for each sample from the theoretical 100°c
Percent error ( 102C) = (102-100/ 100) *100
= 2% error