The rate of evaporation is determined by the slope fit line(not your raw data un

Question

The rate of evaporation is determined by the slope fit line(not your raw data unless it falls directly on the best fit line!!!) to determine the evaporation rate. Choose two points on your best fit line and use them in the rise over run equation to determine the slope of each best fit line. slope = rise/run = Mass 2 - mass 1/time 2 time 1 Discussion: Answer the following questions in your Discussion: In which solvent (hexane/water) did iodine dissolve? Nacl? Describe "how" intermolecular forces might be responsible for the observed so or insolubility of iodine and NaCl in hexane and water. In which water solvent was water miscible-hexane or ethanol? Describe "how" intermolecular forces might be responsible for the observed solubility or insolubility of water in hexane and ethanol In what order did the four solids melt: naphthalene, sucrose, and Describe intermolecular forces might be responsible for the observed order of increasing melting points. Which solvent had the fastest rate of evaporation: ethanol, methanol, and acetone? How is the rate of evaporation related to boiling point? How do you think intermolecular forces influenced the differences in rate of evaporation of ethanol, methanol, and acetone? You observed two alcohols- methanol and ethanol evaporate. Give an explanation, based on molecular properties, as to why one evaporates faster than the other. Conclusion: write a brief conclusion summarizing the effect of intermolecular forces on the various properties of solids and liquids.

Explanation / Answer

1. Iodine is soluble in hexane, where as NaCl is soluble in water.

2. Water is miscible with Methanol.

3. decreasing oder of melting point of given compounds is as follows

NaCl(8010C) > Sucrose(1860C) > Iodine(1130C) > Naphthalene(780C)

4. order of rate of evaporation is as follows

Acetone > Methanol > Ethanol

5. Evaporation is usually occurs on surface. it may occur when the partial pressure of vapour of a substance is less than the equilibrium vapour pressure.

Boiling point is a phase transtition from liquid phase to gas phase that occurs at or above the boiling temperature..

Note: Covalent compounds melts first and Ionic compounds late..

  

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.