9. Why is solid K2CO3 much more soluble in water than hexane (CsH14)? 10. An exp
ID: 552955 • Letter: 9
Question
9. Why is solid K2CO3 much more soluble in water than hexane (CsH14)? 10. An experiment was conducted to analyze the favorability of folding for a short polypeptide consisting entirely of alanine. This polypeptide folds favorably into a single, continuous -helix. a. Briefly describe, in terms of changes in enthalpy and/or entropy why the folding of the -helix is b. Briefly explain why the hydrophobic effect does not contribute significantly to the favorability of c. Assembly of the alpha helix becomes less favorable when an alanine from the center of the favorable folding of this -helix. polypeptide is changed to glycine. Explain this effect in terms of the entropy changes that take place when the -helix assembles. 11. In your own words, explain how entropy is related to the favorability of the hydrophobic effect.Explanation / Answer
question - 9
LIKE DISSOLVES LIKE
3 STEPS FOR DISSOLVING PROCESSES
1 - It is the energy required when solvent particles move apart to make room for the solute particels, at that time this energy required to overcome the forces of the attraction, it is endothermic process.
2- It is energy reuquired to keep solute particles seperate in neghbour , it is endothermic process
3- Intermolecular forces atraction between solute and solvent
the reason is
1- In the heaxane the London dispersive forces act as attracive forces
2 - But in the water the attractive forces are the strong H-Bond and K2CO3 strong ionic bond
3- Te attractive forces between the hexane and water is London Forces
although the hexane molecules enter the water but cannot disslove due weak london froces
Next reason is the it is non-polar substance but K2CO3 is polar so it wil not dissolves that's why it willnot dissolv in it as Polar Dissolves the Polar
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