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24 July, 21:53

Which solution is a buffer? which solution is a buffer? a solution that is 0.200 m in h2so4 and 0.200 m in na2so4 a solution that is 0.200 m in h3po4 and 0.200 m in nah2po4 a solution that is 0.200 m in h3po4 and 0.200 m in nabr a solution that is 0.200 m in h3po4 and 0.200 m in hbr?

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  1. 24 July, 22:11
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    Buffer is formed from weak acid and its salt with strong base (its conjugate base)

    So the only one correct answer is:

    0.2 M H₃PO₄ and 0.2 M NaH₂PO₄

    While all other choices are incorrect
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