Problem: Which of the following aqueous solutions are good buffer systems? and Why?A. 0.19 M potassium hydroxide + 0.27 M potassium bromide.B. 0.28 M hydroiodic acid + 0.18 M sodium iodide.C. 0.30 M ammonia + 0.37 M ammonium nitrate.D. 0.17 M hypochlorous acid + 0.12 M hydrobromic acid.E. 0.38 M calcium bromide + 0.30 M barium bromide.

FREE Expert Solution

We’re being asked to determine which of the given solutions is a good buffer system.


Recall that a buffer can be composed of the following:

weak base and its conjugate acid
weak acid and its conjugate base
weak acid and a strong base 

▪ concentration of weak acid > concentration of strong base

weak base and a strong acid 

concentration of weak base > concentration of strong acid

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Problem Details

Which of the following aqueous solutions are good buffer systems? and Why?

A. 0.19 M potassium hydroxide + 0.27 M potassium bromide.

B. 0.28 M hydroiodic acid + 0.18 M sodium iodide.

C. 0.30 M ammonia + 0.37 M ammonium nitrate.

D. 0.17 M hypochlorous acid + 0.12 M hydrobromic acid.

E. 0.38 M calcium bromide + 0.30 M barium bromide.

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