#Question id: 362
#Unit 1. Molecules and their Interaction Relevant to Biology
A 0.01 M solution of a substance has a pH of 2. What can you conclude about this substance?
#Question id: 361
#Unit 1. Molecules and their Interaction Relevant to Biology
Calculate the percentage of histidine that has its imidazole side chain protonated at pH 7.3. The pKa values for histidine are pK1 = 1.8, pK2 (imidazole) = 6.0, and pK3 = 9.2.
#Question id: 360
#Unit 1. Molecules and their Interaction Relevant to Biology
Which of the following is considered to be a strong base (alkali)?
#Question id: 359
#Unit 1. Molecules and their Interaction Relevant to Biology
What is the concentration of OH− in a solution with an H+ concentration of 1.3 × 10^−4 M?
#Question id: 358
#Unit 1. Molecules and their Interaction Relevant to Biology
Consider the following reaction at equilibrium: CO2 + H2O ⇔ H2CO3. What would be the effect of adding additional H2O?
#Question id: 357
#Unit 1. Molecules and their Interaction Relevant to Biology
What is the concentration of H+ in a solution of 0.1 M NaOH?