#Question id: 383
#SCPH05 I Biotechnology
Three buffers are made by combining a 1 M solution of acetic acid with a 1 M solution of sodium acetate in the ratios shown below
|
1 M acetic acid |
1 M sodium acetate |
|
Buffer 1: 10 mL |
90 mL |
|
Buffer 2: 50 mL |
50 mL |
|
Buffer 3: 90 mL |
10 mL |
Which of these statements is true of the resulting buffers?
#Question id: 384
#SCPH05 I Biotechnology
A solution was prepared by dissolving 0.02 moles of acetic acid (HOAc; pKa = 4.8) in water to give 1 liter of solution. What is the pH? To this solution was then added 0.008 moles of concentrated sodium hydroxide (NaOH). What is the new pH? (In this problem, you may ignore changes in volume due to the addition of NaOH).
#Question id: 384
#SCPH05 I Biotechnology
A solution was prepared by dissolving 0.02 moles of acetic acid (HOAc; pKa = 4.8) in water to give 1 liter of solution. What is the pH? To this solution was then added 0.008 moles of concentrated sodium hydroxide (NaOH). What is the new pH? (In this problem, you may ignore changes in volume due to the addition of NaOH).
#Question id: 385
#SCPH05 I Biotechnology
In which reaction below does water not participate as a reactant (rather than as a product)?
#Question id: 385
#SCPH05 I Biotechnology
In which reaction below does water not participate as a reactant (rather than as a product)?
#Question id: 386
#SCPH05 I Biotechnology
Which of the following properties of water does not contribute to the fitness of the aqueous environment for living organisms?