Question

How necessary is soap for removing salt from your hands?
A) Soap is necessary because it has both a polar and nonpolar end to interact with the positive and negative ions in the salt.
B) Soap is necessary because it creates a film on the surface of your skin, shielding it from interacting with the ionic charges of the salt.
C) Soap is not at all necessary for removing salt from your hands. The strong ion-dipole interactions between fresh water and the salt are most sufficient to lift the salt away from your hands.
D) Soap is not necessary because there are no electrical charges on the skin of your hands for the salt to interact with.

Answer

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