# Problem: Which of the following aqueous solutions are good buffer systems? [YOU CAN PICK MORE THAN ONE]0.31 M ammonium bromide + 0.32 M ammonia0.21 M hypochlorous acid + 0.12 M sodium hypochlorite0.39 M hydrocyanic acid + 0.24 M sodium cyanide0.13 M calcium hydroxide + 0.28 M calcium chloride0.23 M hydrobromic acid + 0.19 M potassium bromide

###### FREE Expert Solution

Establish the proper buffer pairs and analyze each choice if they are possible buffer pair

Step 1. Recall that buffers resist drastic changes to the pH if a strong acid or strong base is added.

A buffer is a solution that can be made up of:

• weak base and its conjugate acid
• weak acid and its conjugate base
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###### Problem Details

Which of the following aqueous solutions are good buffer systems? [YOU CAN PICK MORE THAN ONE]

0.31 M ammonium bromide + 0.32 M ammonia

0.21 M hypochlorous acid + 0.12 M sodium hypochlorite

0.39 M hydrocyanic acid + 0.24 M sodium cyanide

0.13 M calcium hydroxide + 0.28 M calcium chloride

0.23 M hydrobromic acid + 0.19 M potassium bromide