instruction:
In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
question:
This reaction is combined with an aldol condensation to produce cyclohexenones in a process named for Robinson, and a variation of this uses silyl ethers and titanium tetrachloride, in a reaction named also for Mukaiyama. In a process analogous to this reaction, performed with simple ketones, the equilbrium is shifted towards the reagents, unlike in the Claisen and aldol condensations, necessitating the use of an enolate in conjugate addition to produce the 1,4-addition. For 10 points, what is this reaction named for an American chemist, which consists of the addition of a carbanion to an alpha, beta unsaturated carbonyl
answer:
Science

question:
In 1789, a mural of the Virgin Mary appeared in a mineshaft in this country in an apparent miracle; a few years later, the Virgin of the Mineshaft was named the patron saint of its Oruro Carnival. Its popular foods include a baked empanada called a saltena. Two of this country's lakes are Lake Rogagua and Lake Rogoaguado, both of which lie in its Beni Department. The Beni and Mamore Rivers join to form the Madeira River at Villa Bella on this country's northern border. Near this country's warm Yungas region is the higher elevation site of Lake Poopo and the Salar de Uyuni. That plateau is known as the Altiplano and also contains the eastern part of Lake Titicaca. For 10 points, name this landlocked South American nation with capitals at La Paz and Sucre.
answer:
Social Science

question:
One analogue of this quantity, designed for use in concentrated solutions, is equal to -19 for a certain mixture that contains antimony pentafluoride. One equation for this quantity, which may be derived by rearranging the defining equation for "K sub a", is called the Henderson- Hasselbalch equation. Under standard conditions, this quantity is half the self-ionization constant pKw. This quantity is defined as the negative logarithm of the concentration of hydronium ions in a solution. For 10 points, name this quantity which can be crudely measured using indicators like phenolphthalein, and which is 7 for neutral solutions and less for acids.
answer:
Science