Question

What is the ph of a buffer solution made by adding 0. 010 mole of solid naf to 50. ml of 0. 40 m HF? Assume no change in volume. ka (hf) = 6. 9×10^–4.

Answer 1

2.9  is the ph of a buffer solution made by adding 0. 010 mole of solid naf to 50. ml of 0. 40 m HF.

pH

The hydrogen ion concentration in water is expressed by pH. Specific to aqueous solutions, pH is the negative logarithm of the hydrogen ion (H+) concentration (mol/L):

pH equals -log(H+)10

The phrase refers to a solution's basicity or acidity in a range of 0 to 14, with pH 7 representing neutrality. The pH decreases and acidity rise as the concentration of H+ ions in the solution.

Since pH is a logarithmic function, a pH shift of one unit (for example, from 7 to 6) corresponds to a 10x change in the concentration of H+ in the solution. However, hydrogen ion activity, not concentration, is what is actually measured.

To learn more about pH refer here:

brainly.com/question/15239039

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