MCQ
Which one of the following is not a buffer solution?
- A$0.8 M H _2 S +0.8 M KHS$.
- B$2 M C _6 H _5 NH _2+2 M C _6 H _5 N$
- C$3 M H _2 CO _3+3 M KHCO _3$
- ✓$0.05 M KClO _4+0.05 M HClO$
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