Se realizó un análisis para determinar la composición iónica de tres muestras de suelo. Los
resultados del análisis se presentan en la siguiente
tabla:
MUESTRA 1
MUESTRA 2
MUESTRA 3
Na
Co2
cr
3
PO4
NHA
kt
50,-
NO3
Cat2
K
Na
9. De acuerdo con la información anterior, es muy
probable que en la muestra 3 se encuentren las
sales:
a. CaCl2, Ca3(PO4)2 y Nazca
b. NaCl, CaCl2, Ca3(PO4)2 y Na3PO4
c. Nazca, CaCl2, Ca3(PO4)2 y Na3PO4
d. NaCl, Na(PO4)3 y Ca3(PO4)2
​

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.

dynamic equilibrium is the answer.