Phosphate ions, Image3-, were once added to detergents to assist in cleaning. What function did they serve?
A) Phosphate ions were relatively good at removing grease by binding with large nonpolar molecules.
B) Phosphate ions were large enough to bind with the large grime molecules and remove them.
C) Phosphate ions would bind to and remove calcium ions, thus acting as a water softening agent.
D) Phosphate ions would reduce the growth of algae in aquatic habitats receiving the wastewater.
Question 2
Why might a solvent like turpentine be better for removing grease and grime than water?
A) Like dissolves like.
B) Oil and grease have similar interatomic forces as the turpentine and so are more soluble.
C) Water is too polar and doesn't interact well with the nonpolar oils.
D) Oil and grease have very limited solubility in the water.
E) all of the above
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