This poster for the Natural Sciences Poster Session at Parkland College features chemist Wilhelm Ostwald who discovered the law of dilution in 1988, which is the application of the law of mass action to weak electrolytes in solution. He also developed a process of catalytic oxidation of ammonia to nitric acid and introduced the word "mole".
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Johnson, Kori K., "Wilhelm Ostwald" (2017). Natural Sciences Poster Sessions. 110.