Principles of Chemistry

Chemistry

Quiz 16 :
Aqueous Ionic Equilibrium

Quiz 16 :
Aqueous Ionic Equilibrium

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Fluffy,your prized Himalayan cat,was outside when your dad was changing the antifreeze in the car.Fluffy licked up a large amount of the antifreeze off the driveway.You live many miles from the veterinarian.What could you give Fluffy to drink to counteract the effects of antifreeze?
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Answer:

C

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Which of the following solutions is a good buffer system?
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Answer:

A

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Which of the following solutions is a good buffer system?
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Answer:

B

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Which one of the following statements is true?
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If the pKa of HCHO2 is 3.74 and the pH of an HCHO2/NaCHO2 solution is 3.11,which of the following is true?
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If the pKa of HCHO2 is 3.74 and the pH of an HCHO2/NaCHO2 solution is 3.89,which of the following is true?
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If the pKa of HCHO2 is 3.74 and the pH of an HCHO2/NaCHO2 solution is 3.74,which of the following is true?
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You wish to prepare an HC2H3O2 buffer with a pH of 4.24.If the pKa of is 4.74,what ratio of C2H3O2-/HC2H3O2 must you use?
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You wish to prepare an HC2H3O2 buffer with a pH of 5.44.If the pKa of is 4.74,what ratio of C2H3O2-/HC2H3O2 must you use?
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A buffer solution is 0.100 M in both HC7H5O2 and LiC7H5O2 and has a pH of 4.19.Which of the following pH values would you be most likely to see from the addition of a small amount of a dilute solution of a strong base?
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Calculate the pH of a buffer that is 0.058 M HF and 0.058 M LiF.The Ka for HF is 3.5 × 10-4.
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Calculate the pH of a buffer that is 0.158 M HClO and 0.099 M NaClO.The Ka for HClO is 2.9 × 10-8.
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Calculate the pH of a buffer that is 0.105 M HC2H3O2 and 0.146 M KC2H3O2.The Ka for HC2H3O2 is 1.8 × 10-5.
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Calculate the pH of a solution formed by mixing 250.0 mL of 0.15 M NH4Cl with 100.0 mL of 0.20 M NH3.The Kb for NH3 is 1.8 × 10-5.
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Calculate the pH of a solution formed by mixing 250.0 mL of 0.15 M NH4Cl with 200.0 mL of 0.12 M NH3.The Kb for NH3 is 1.8 × 10-5.
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Calculate the pH of a solution formed by mixing 100.0 mL of 0.20 M HClO with 200.0 mL of 0.30 M KClO.The Ka for HClO is 2.9 × 10-8.
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Calculate the pH of a solution formed by mixing 150.0 mL of 0.10 M HC7H5O2 with 100.0 mL of 0.30 M NaC7H5O2.The Ka for HC7H5O2 is 6.5 × 10-5.
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Calculate the pH of a solution formed by mixing 250.0 mL of 0.15 M HCHO2 with 100.0 mL of 0.20 M LiCHO2.The Ka for HCHO2 is 1.8 × 10-4.
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A 1.00 L buffer solution is 0.150 M in HC7H5O2 and 0.250 M in LiC7H5O2.Calculate the pH of the solution after the addition of 100.0 mL of 1.00 M HCl.The Ka for HC7H5O2 is 6.5 × 10-5.
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A 1.00 L buffer solution is 0.250 M in HF and 0.250 M in NaF.Calculate the pH of the solution after the addition of 100.0 mL of 1.00 M HCl.The Ka for HF is 3.5 × 10-4.
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