Phosphate Ions $\mathrm { PO } _ { 4 }$ ^3-,were Once Added to Detergents to Assist in Cleaning

question 13

Multiple Choice

Phosphate ions, $\mathrm { PO } _ { 4 }$ ^3-,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.

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