The student electrolyses a solution of potassium chloride. Figure 1 shows the apparatus she uses. When the current is switched on, bubbles of hydrogen gas are given off at the negative electrode. Explain why hydrogen is produced and not potassium

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.