Explain why a solution that is prepared by dissolving 0. 1 mol each of kh2po4 and k3po4 in 1 l of water is not a buffer solution.

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08-11-2022
Chemistry

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Explain why a solution that is prepared by dissolving 0. 1 mol each of kh2po4 and k3po4 in 1 l of water is not a buffer solution.

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Sakshtiwari Sakshtiwari · Answer 1 · 2022-11-12T08:35:56-05:00

The term "buffer" refers to a solution's capacity to withstand pH fluctuations, even when additional bases or acids are introduced. Buffer has the ability to neutralize any acids or bases supplied to the system in order to stabilize it.

Why does it act as a buffer?

Equivalent molar ratios of KH2PO4 and K2HPO4 when combined with water result in the creation of buffer solution. A particular kind of dibasic salt is dipotassium phosphate. K2HPO4 is the solution that is created when hydrogen ions are added to K3PO4, and it functions as a conjugate acid. H2PO4 acts as a weak acid and HPO2 acts as a conjugate base of a in this system of buffers diluted acid . As a result, this KH2PO4 and K2HPO4 solution in water serves as a buffer.

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