Multiple Choice
Which one of the following combinations does not create a buffer?
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18. Aqueous Equilibrium
Intro to Buffers
Back18. Aqueous Equilibrium
Intro to Buffers
- Multiple Choice
Which of the following combinations can result in the formation of a buffer?
2124views5rank7comments - Multiple Choice
Which of the following combinations can result in the formation of a buffer?
2072views5comments - Multiple Choice
A buffer solution is comprised of 50.0 mL of a 0.100 M HC2H3O2 and 60.0 mL of a 0.100 M NaC2H3O2. Which of the following actions would completely destroy the buffer?
3320views3rank9comments - Multiple Choice
Calculate the pH of a solution formed by mixing 200 mL of a 0.400 M C2H5NH2 solution with 350 mL of a 0.450 M C2H5NH3+ solution. (Kb of C2H5NH2 is 5.6 x 10 -4).
3192views2rank19comments - Multiple Choice
Determine how many grams of sodium acetate, NaCH3CO2 (MW:82.05 g/mol), you would mix into enough 0.065 M acetic acid CH3CO2H (MW:60.05 g/mol) to prepare 3.2 L of a buffer with a pH of 4.58. The Ka is 1.8 x 10-5.
3500views9comments - Multiple Choice
A buffer solution is made by combining a weak acid with its conjugate salt. What will happen to the pH if the solution is diluted to one-fourth of its original concentration?
2658views2comments - Multiple ChoiceWhich of the following statements is true about a solution prepared with equal amounts of HNO2 and NaNO2?519views
- Multiple ChoiceThe addition of which of the following would destroy a 1.0 L buffer that is 0.50 M HC2H3O2 and 0.40 M NaC2H3O2?450views
- Multiple ChoiceWhich of the following would produce a buffer?512views
- Multiple ChoiceWhat is the pH of a 1.0 L buffer solution containing 0.500 M HF and 0.300 M NaF. Ka for HF = 3.5 × 10−4.579views
- Multiple ChoiceDetermine the pH of a 1.0 L buffer prepared by adding 0.100 moles of NaOH to 0.250 moles of HF. Ka for HF = 3.5 × 10−4.490views
- Multiple ChoiceWhat mass of NaC2H3O2 (molar mass = 82.03 g/mol) would need to be added to 0.450 moles of HC2H3O2 to prepare a 1.0 L buffer with a pH = 4.95. Ka for HC2H3O2 = 1.8 × 10−5.1433views
- Multiple Choice1.0 L of a buffer is prepared to produce a solution that is 0.400 M in HF and 0.250 M in LiF. What is the pH after the addition of 2.5 g of KOH? Assume no volume change.
Ka for HF = 3.5 × 10−4.538views - Multiple Choice
Which pairs of compounds are capable of making a buffer? Select all that apply.
a) 1.3 M LiOH and 1.7 M HCOOH c) 0.35 M CH3CO2H and 0.35 M NaOH
b) 0.784 M NH4+ and 0.800 M HClO4 d) 0.80 HNO3 and 0.15 MgO
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