# Calculating the pH of a Lewis Acid / Base Mixture

**URL:** <https://boards.straightdope.com/t/calculating-the-ph-of-a-lewis-acid-base-mixture/594180>\
**Category:** Factual Questions\
**Created:** [August 26, 2011, 1:58pm UTC](https://boards.straightdope.com/t/calculating-the-ph-of-a-lewis-acid-base-mixture/594180 "2011-08-26T13:58:01Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![MattProle](https://avatars.discourse-cdn.com/v4/letter/m/ed8c4c/32.png) [@MattProle](https://boards.straightdope.com/u/MattProle)\
**Post date:** [August 26, 2011, 1:58pm UTC](https://boards.straightdope.com/t/calculating-the-ph-of-a-lewis-acid-base-mixture/594180/1 "2011-08-26T13:58:01Z")

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I need to know if there is a generalized method to calculating the pH of a Lewis Acid / base combination. For example, given a dry wt% of SiO2, Al2O3, CaO and MgO, how may we predict the pH of such a solution?