Which of the following aqueous solutions are good buffer, Ask an Expert

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Which of the following aqueous solutions are good buffer systems ?
.
0.17 M hypochlorous acid + 0.13 M perchloric acid
.
0.12 M barium hydroxide + 0.28 M barium bromide
.
0.25 M hydroiodic acid + 0.16 M potassium iodide
.
0.29 M ammonia + 0.33 M ammonium bromide
.
0.30 M sodium perchlorate + 0.27 M barium perchlorate

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