Which chemist discovered the name nitrogen and has the winemaking process chaptalization named after him?

Which chemist discovered the name nitrogen and has the winemaking process chaptalization named after him?

• A. Louis Pasteur
• B. Jean-Antoine Chaptal
• C. Nicolas-Theodore de Saussure
• D. Joseph Louis Gay-Lussac

Answer: (B)

Chaptalization is the practice of adding sugar to grape must to raise potential alcohol when grapes haven’t accumulated enough sugars. The chemist who gave his name to this winemaking technique is Jean-Antoine Chaptal, a French chemist whose work in practical chemistry and wine science popularized the method. He explained how extra sugar in the must translates to more fermentable sugars and higher alcohol, so the technique bears his name and is widely associated with his contributions to wine chemistry. The other scientists listed are known for different areas—Pasteur for fermentation theory, Saussure for plant chemistry and gas studies, and Gay-Lussac for gas laws—so they aren’t linked to the term chaptalization.

Chaptalization is the practice of adding sugar to grape must to raise potential alcohol when grapes haven’t accumulated enough sugars. The chemist who gave his name to this winemaking technique is Jean-Antoine Chaptal, a French chemist whose work in practical chemistry and wine science popularized the method. He explained how extra sugar in the must translates to more fermentable sugars and higher alcohol, so the technique bears his name and is widely associated with his contributions to wine chemistry. The other scientists listed are known for different areas—Pasteur for fermentation theory, Saussure for plant chemistry and gas studies, and Gay-Lussac for gas laws—so they aren’t linked to the term chaptalization.