which statement most accurately explains the cleaning action of detergent on gre
ID: 947181 • Letter: W
Question
which statement most accurately explains the cleaning action of detergent on greasy dishes? A) The detergent changes the water-solubility of the grease so that it is easily dissolved by the water. B) The grease is trapped inside the hydrophobic interior of micelles made of detergent molecules. C) The detergent chemically breaks down the grease into smaller, more water-soluble molecules. D) The detergent binds to the grease with its polar head groups and holds it as suspension. 2. A titration curve for a weak acid is shown. which point shows the largest buffering capacity?Explanation / Answer
1. Answer is B.
Grease are a nonpolar compounds and Water is a polar molecule. Detergent molecules have both a polar and non-polar side.
In chemistry, compounds that are polar like to mix with other polar compounds and compounds that are nonpolar like to mix with other nonpolar compounds.
2. Answer is C) C.
Point "C" looks halfway to the equivalent point, where pH = pKa, of an acid, the maximized buffering region.
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