What is the pH of a salt and water solution?

1 Answer
anor277
Jun 23, 2016

For natrium chloride, #pH~=7#

Explanation:

Solutions of #NaCl# are #pH# neutral. The is the salt of a strong acid and a strong base. Salts of weak acid, for instance, #NaF# (and note that #HF# is a fairly weak acid), give an alkaline solution in water:

#F^(-)(aq) + H_2O(l) rarr HF(aq) + HO^-#

The conjugate base of a weak acid, demonstrably competes for the proton.

And likewise such salts as #HSO_4^(-)Na^(+)#, sodium bisulfate, would give acidic solutions.

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