Limited funding and access to proper disposal services often limit hands-on learning in the science classroom.  Incorporating greener chemistry options in the classroom allows topics such as acid-base chemistry to be taught with minimal impact to the environment.<br/>Acid-base chemistry is a fundamental concept, appearing in science standards, and is often taught using titrations. For example, Tennessee State Science Standards include knowledge of calculating pH, evaluating titration curves and understanding the mathematical principles used in chemistry.<br/>This study focuses on using a direct titrimetric technique to examine the acidity in coffee. Initial testing was done using sodium hydroxide as the base and bromothymol blue indicator. Bromothymol blue indicator was used because the titration curves showed an equivalence point near 7. Greener options for both bases and indicators will be tested to make the reaction safer for students and to create less hazardous waste.<br/>

Greener options in the chemistry classroom: A titrimetric analysis of coffee

255th National Meeting (2018)

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