Question

Using the image as a model, select all statements that are true about how water can dissolve an ionic solute like sodium chloride, NaCl
.



(2 points)
Responses

When you mix salt into water the sodium and chlorine pull the water molecules apart into hydrogens and oxygens.
When you mix salt into water the sodium and chlorine pull the water molecules apart into hydrogens and oxygens.

When you mix salt into water, the hydrogen end of water pulls on the negative chloride ion, Cl−
When you mix salt into water, the hydrogen end of water pulls on the negative chloride ion, cap c l raised to the negative power

When you mix table salt into water, the two substances don't mix evenly and salt settles out and is unchanged.
When you mix table salt into water, the two substances don't mix evenly and salt settles out and is unchanged.

When you mix salt into water, the oxygen end of the water pulls on the positive sodium ion, Na+

Answer 1

True statements:
- When you mix salt into water, the hydrogen end of water pulls on the negative chloride ion, Cl−. (The partially positive H sides of H2O molecules are attracted to anions.)
- When you mix salt into water, the oxygen end of the water pulls on the positive sodium ion, Na+. (The partially negative O sides of H2O molecules are attracted to cations.)

False statements (brief reasons):
- "Sodium and chlorine pull the water molecules apart into hydrogens and oxygens." — False: water stays as H2O molecules; ions solvate (surround) the molecules rather than splitting them into atoms.
- "Salt doesn't mix evenly and settles out and is unchanged." — False for a typical dissolution: NaCl dissociates into Na+ and Cl− and these ions disperse through the water.