Question

When KCl dissolves in water:

the Cl- ions are attracted to the partially negative oxygen atoms of the water molecule.

the K+ ions are attracted to Cl- ions on the KCl crystal.

the K+ ions are attracted to the partially positive hydrogen atoms of the water molecule.

the K+ ions are attracted to the partially negative oxygen atoms of the water molecule.

the Cl- ions are attracted to dissolved K+ ions.

Please explain!

Answer 1

This dissociation occur because:

O had to bond with H due to the Hydrogen bonding rule, which will form OH~ (Hydroxide).

K is more attracted to Hydroxide than Cl, so it will depart Cl and bond with OH~.

that leaves a H and a Cl, which one has a positive charge and the other has a negative, so they will bond and form Hydrochloric Acid.