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88 solutions

Weak Bases

Q. Determine the pH of a 0.22 M NaF solution at 25 degrees C. The Ka of HF is 3.5x10^-5. a) 10.20 b) 2.56 c) 11.44 d) 5.10 e) 8.90

Solved • Nov 8, 2019

Weak Bases

Q. Morphine is a weak base. A 0.150 M solution of morphine has a pH of 10.5. What is Kb for morphine? Express your answer using one significant figures.

Solved • Nov 8, 2019

Weak Bases

Q. Calculate the pH of a 1.60 M KBrO solution. K a for hypobromous acid, HBrO, is 2.0x10^-9. a) 2.55 b) 4.25 c) 9.75 d) 11.45

Solved • Nov 8, 2019

Weak Bases

Q. Ammonia, NH3, is a weak base with a Kb value of 1.8x10^-5. What is the percent ionization of ammonia at this concentration? Express your answer with the appropriate units.

Solved • Nov 8, 2019

Weak Bases

Q. Ammonia, NH3, is a weak base with a Kb value of 1.8x10^-5. What is the pH of a 0.300 M ammonia solution? Express your answer numerically to two decimal places.

Solved • Nov 8, 2019

Weak Bases

Q. If Kb for NX3 is 3.5x10^-6, what is the pOH of a 0.175 M aqueous solution of NX3? Express your answer numerically.

Solved • Nov 8, 2019

Weak Bases

Q. What is the pH of the buffer solution that contains 2.0 g of NH4Cl in 250 mL of 0.10 M NH3? is the final pH lower or higher than the pH of the 0.10 M ammonia solution? (Kb for ammonia is 1.8 x 10^-5.) pH of the buffer = ____ The final pH is ____ than the pH of the 0.10 M ammonia solution.

Solved • Nov 5, 2019