#Question id: 376
#Unit 1. Molecules and their Interaction Relevant to Biology
Phosphoric acid is tribasic, with pKa of 2.14, 6.86 and 12.4. The ionic form that predominates at pH 3.2 is
#Question id: 377
#Unit 1. Molecules and their Interaction Relevant to Biology
The aqueous solution with the highest pH is:
#Question id: 378
#Unit 1. Molecules and their Interaction Relevant to Biology
Which of the following statements about buffers is true?
#Question id: 379
#Unit 1. Molecules and their Interaction Relevant to Biology
A compound has a pKa of 7.4. To 100 mL of a 1.0 M solution of this compound at pH 8.0 is added 30 mL of 1.0 M hydrochloric acid. The resulting solution is pH:
#Question id: 380
#Unit 1. Molecules and their Interaction Relevant to Biology
The Henderson-Hasselbalch equation:
#Question id: 381
#Unit 1. Molecules and their Interaction Relevant to Biology
Consider an acetate buffer, initially at the same pH as its pKa (4.76). When sodium hydroxide (NaOH) is mixed with this buffer, the: