Application 3. (20 pts) Petrolatum is an organic compound composed of a mixture of alkanes (organic compounds only containing carbons, hydrogens, and single bonds) obtained from petroleum. It is often added to skin care products since it softens near body temperature forms a protective barrier that prevents moisture loss. If a new skin care product does not soften on application as expected, what suggestion would you give to decrease the melting point of the product based on petrolatum composition? In other words, how might you change the size of the alkane molecules used in the petrolatum to make it melt at a lower temperature? 4. (15 pts, 5 pts solvent choice, 10 pts explanation) Polystyrene is a plastic composed of repeating units of styrene. Its structure is shown below. n n Styrene Polystyrene Polystyrene is one of the major products of the petrochemical industry. In order to synthesize polystyrene from styrene, a solvent that dissolves styrene is needed. Based on your observations during this experiment, suggest a solvent. Remember to consider polarizability AND like dissolves like. Briefly explain your choice.

Application 3. (20 pts) Petrolatum is an organic compound composed of a mixture of alkanes (organic compounds only containing carbons, hydrogens, and single bonds) obtained from petroleum. It is often added to skin care products since it softens near body temperature forms a protective barrier that prevents moisture loss. If a new skin care product does not soften on application as expected, what suggestion would you give to decrease the melting point of the product based on petrolatum composition? In other words, how might you change the size of the alkane molecules used in the petrolatum to make it melt at a lower temperature? 4. (15 pts, 5 pts solvent choice, 10 pts explanation) Polystyrene is a plastic composed of repeating units of styrene. Its structure is shown below. n n Styrene Polystyrene Polystyrene is one of the major products of the petrochemical industry. In order to synthesize polystyrene from styrene, a solvent that dissolves styrene is needed. Based on your observations during this experiment, suggest a solvent. Remember to consider polarizability AND like dissolves like. Briefly explain your choice.

Physical Chemistry

2nd Edition

ISBN:9781133958437

Author:Ball, David W. (david Warren), BAER, Tomas

Publisher:Ball, David W. (david Warren), BAER, Tomas

Chapter7: Equilibria In Multiple-component Systems

Section: Chapter Questions

Problem 7.34E

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