Answer:
I. Solvent-solvent interactions ⇒ B, F
II. Solute-solute interactions ⇒ A, D
III. Solute-solvent interactions ⇒ C, E, G
Explanation:
In the dissolution of sodium chloride (NaCl) in water, the solute is NaCl which in solution is dissociated into its ions (Na⁺ and Cl⁻) and the solvent is water (H₂O) whose molecules are polar and therefore are considered as dipoles.
Solvent-solvent interactions are between water molecules so they are between dipoles (options B and F)
Solute-solute interactions are between NaCl ions in which electrostatic forces are involved. They can be between sodium ions or choride iones (Na⁺-Na⁺, Cl⁻-Cl⁻, repulsive) or between sodium and chloride ions (Na⁺-Cl⁻, attractive) (options A and D).
Solute-solvent interactions are between sodium chloride ions and water molecules, so dipole-ion forces are involved. During dissolution process, solute ions are surrounded by water molecules, which is called hydration. The overall process is exothermic (releases heat) (options C, E and G).
If an anhydrous Cupric Perchlorate weighs 262.447g/mol initially and weighs 370.540 g/mol after sitting on the bench to absorb water from the air, the number of water molecules absorbed would be 6 moles.
First, let us calculate the amount of water gained during the course of staying on the bench:
Water gained = weight after gaining water - initial weight
= 370.540 - 262.447
= 108.093g/mole
The total amount of water gained per mol is 108.093. Each water molecule weighs 18.015 g/mole. Thus, the total number of water molecules that will sum up to 108.093 would be:
108.093/18.015 = 6 moles
In other words, the number of water molecules absorbed by the Cupric Perchlorate is 6 moles.
More on calculating water of hydration can be found here: brainly.com/question/919417
Answer:
boiling water
Explanation:
boiling water produces more severe burns
