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QUESTION 12
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What is the proper method for transporting and cooling hot glassware? Science Assignment Help[supanova_question]
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How to calculate the pH? & which would be the best buffer Science Assignment Help
1. Acetylsalic acid is a week acid (HC9H7O4 Pka=3.48) A 25 mL solution of 0.15 M aspirin is titrated with 0.10 M NaOH. calculate the pH of the solution after 15 mL of NaOH is added and the volume of NaOH needed to reach the equivalence point of the titration.
2.which of the following acid-base solutions would be the most effective buffer when dissolved in water?
A. .50M CH3COOH & .10M CH3COONa
B. .30 M CH3COOH & .30 M CH3COONa
C. .30M NaCl & .30 M HCl
D. .20M NH3 & .40M HCl
E. .40M HBr & .20M NaOH
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