#Question id: 374
#Unit 1. Molecules and their Interaction Relevant to Biology
The pH of a sample of blood is 7.4, while gastric juice is pH 1.4. The blood sample has:
#Question id: 375
#Unit 1. Molecules and their Interaction Relevant to Biology
The aqueous solution with the lowest pH is:
#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: