(20 points)
a student had a sample of pure water, and added an unknown substance to it. the student notice that the hydroxide ion concentration in the solution increased as the substance was added. what is true qbout this newly formed solution?

a. it is basic
b. it is acidic
c. it is a buffer
d. it has a ph of 7

intermolecular forces are the forces between molecules or particles.

there are two kinds of van der waals forces: weak london dispersion forces and stronger dipole-dipole forces.

in molecule of water there are dipole-dipole forces between negatively charged oxygen from one molecule of water and positively charger hydrogen of another molecule of water.

hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom (h), covalently bound to a highly electronegative atom such as flourine (f), oxygen (o) and nitrogen (n) atoms.