The minimum pressure required to purify the water by osmosis process to be calculated. Concept introduction Desalination: Desalination is the action of removing salts that are dissolved in the water. Resulting, obtain pure water from seawater. Osmosis: Osmosis is the process in which solvent molecule enter from low concentration into high concentration through semi permeable membrane. Reverse osmosis: Reverse osmosis is water purification technique in which ions or molecule or larger molecules are removed by using semi permeable membrane.

Question

Synthesis of Ibuprofen-Part 1: 1. What characteristic absorption band changes would you expect in the IR spectrum on going from p-isobutylacetophenone to 1-(4-isobutylphenyl)-ethanol and then to 1-(4-isobutylphenyl)-1-choroethane as you did in the experiment today? Give approximate wavenumbers associated with each functional group change. Given that the mechanism of the chlorination reaction today involves formation of a benzylic carbocation, explain why the following rearranged product is not formed. محرم محمد 3. Why do we use dilute HCl for the first step of the reaction today and concentrated HCI for the second step? What signals appeared/disappeared/shifted that indicate that you have your intended product and not starting material? What other impurities are present in your product and how do you know?

Answer 1

Question

Chapter 11, Problem 82E

Interpretation Introduction

Interpretation: The minimum pressure required to purify the water by osmosis process to be calculated.

Concept introduction

Desalination: Desalination is the action of removing salts that are dissolved in the water. Resulting, obtain pure water from seawater.

Osmosis: Osmosis is the process in which solvent molecule enter from low concentration into high concentration through semi permeable membrane.

Reverse osmosis: Reverse osmosis is water purification technique in which ions or molecule or larger molecules are removed by using semi permeable membrane.

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Synthesis of Ibuprofen-Part 1: 1. What characteristic absorption band changes would you expect in the IR spectrum on going from p-isobutylacetophenone to 1-(4-isobutylphenyl)-ethanol and then to 1-(4-isobutylphenyl)-1-choroethane as you did in the experiment today? Give approximate wavenumbers associated with each functional group change. Given that the mechanism of the chlorination reaction today involves formation of a benzylic carbocation, explain why the following rearranged product is not formed. محرم محمد 3. Why do we use dilute HCl for the first step of the reaction today and concentrated HCI for the second step? What signals appeared/disappeared/shifted that indicate that you have your intended product and not starting material? What other impurities are present in your product and how do you know?

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