Before carbonate ions added could force precipitation of Ca2 ions in the form of CaCO3 we needed to use them also for neutralization of the excess of HCl. (note that this acid was added to crushed antacid tablet to transfer all Ca2 ions to a solution). Write TWO reactions (both in the proper order) that needed to be completed during

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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.