Lab 1. Solubility of Salt at Various Temperatures Describe what is happening, at
ID: 228488 • Letter: L
Question
Lab 1. Solubility of Salt at Various Temperatures Describe what is happening, at a molecular level, when a salt dissolves in a solvent. Be sure to include descriptions of the intramolecular (solvent solute) and intermolecular forces involved. I. 2. A student is trying to dissolve 3.0 g of NaCI, in 5.0 ml, water, at 30 °C. The solubility limit of NaCl is 40 g/100 mL water. Will all of the salt dissolve? If not, how much salt will be left over? Lab 2. Colligative Properties of Solutions A 1.0 m solution of CaClh and a 1.0 m solution of glucose exhibit different freezing points Explain the difference between these solutions, and how this difference is factored into the colligative property equation. 1. Calculate the theoretical boiling point of a solution prepared by dissolving 50.0 grams of MgCl2 in 500 mL H2O. The ky for water is 1.86 °C/molal and the kb of water is 0.52 °C/molal 2. (10)Explanation / Answer
Ans 1 :
When the salt such as NaCl dissolves in a solvent such as water, the positively charged ions are attracted by the negative part of water molecules and positive ions are attracted by the negative part of water molecules.
The electric charge of the water molecules is strong enough to break the intramolecular bonds of the salt molecule and split it into individual ions.
When the solution is agitated or stirred , the solubility of the salt increases and it dissolves faster , as the mechanical energy enables the breaking of bonds faster.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.