ColombianBoy ColombianBoy

11-05-2020
Chemistry

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Calculate the Ph of:
A buffer that is prepared with acetic acid (CH3COOH) at 0.12M and sodium acetate (CH3COONa) at 0.11M.
The acid constant is Ka = 1.38 x 10-4.

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sypherjunior sypherjunior

11-05-2020

Answer:

pH= 3.82

Explanation:

Sodium ethanoate or sodium acetate (CH3COONa) ionises completely.

Ethanoic acid or acetic acid (CH3COOH), ionises partially because it is a weak acid.

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