A pair of samples of water are taken from a well bored into a large underground salt deposit. Sample #1 is from the top of the well, and is initially at . Sample #2 is from a depth of , and is initially at . Both samples are allowed to come to room temperature () and pressure. An precipitate is seen to form in Sample #1.
Predicted observation would be:
A. A bigger mass of precipitate will form in Sample #2.
B. A smaller mass of precipitate will form in Sample #2.
C. The same mass of precipitate will form in Sample #2.
D. No precipitate will form in Sample #2.
E. I need more information to predict whether and how much precipitate will form in Sample #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.

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.