# Is this Solution Pink Enough? A Smartphone Tutor to Resolve the Eternal Question in Phenolphthalein-Based Titration

> Research article (Journal of Chemical Education, 2019) · cited 27× · AI/ML

**Wikidata**: [openalex:W2916392501](https://www.wikidata.org/wiki/openalex:W2916392501)  
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