A buffer solution consisting of H2PO4 − (acid) and HPO4 2− (base), in a ratio of 1:4, maintains the pH at 7.4. What is the ratio of these two components if the pH were to become 8.4 after the addition of more of the basic component of the buffer

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2022-09-12

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A buffer solution consisting of H2PO4

− (acid) and HPO4

2− (base), in a ratio of

1:4, maintains the pH at 7.4. What is the ratio of these two components if the

pH were to become 8.4 after the addition of more of the basic component of the

buffer?

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saraalalwane

2022-09-12

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D: The pH of a buffer is determined by the ratio of its two components.

pH is a logarithmic scale of the hydronium ion concentration of a solution.

Hence the ratio must change by a factor of 10 in order for the pH to change

by one (i.e. change from 7.4 to 8.4).

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