The alkene from which the alcohol shown can be prepared is to be stated. Among the two, epoxide hydrolysis and OsO 4 , the method which can be used to prepare the diol also is to be stated. Concept introduction: During epoxidation an oxygen atom is transferred to the double bond in alkene with syn stereochemistry. Both C-O bonds are formed o the same face of the double bond. The epoxides undergo a acid catalyzed hydrolysis during which the ring is opened to give a trans -1,2-diol. The hydroxylation with OsO 4 also occurs with syn stereochemistry. The addition of OsO 4 to the alkene gives a cyclic osmate which is cleaved by using aqueous NaHSO 3 to yield a cis- 1,2-diol. To state: The alkene from which the alcohol shown can be prepared. Further to state, among epoxide hydrolysis and OsO 4 , the method which can be used to prepare the diol.

Question

need help not sure what am doing wrong step by step please answer is 971A During the lecture, we calculated the Debye length at physiological salt concentrations and temperature, i.e. at an ionic strength of 150 mM (i.e. 0.150 mol/l) and a temperature of T=310 K. We predicted that electrostatic interactions are effectively screened beyond distances of 8.1 Å in solutions with a physiological salt concentration. What is the Debye length in a sample of distilled water with an ionic strength of 10.0 µM (i.e. 1.00 * 10-5 mol/l)? Assume room temperature, i.e. T= 298 K, and provide your answer as a numerical expression with 3 significant figures in Å (1 Å = 10-10 m).

Answer 1

Question

Chapter 8.SE, Problem 24VC

Interpretation Introduction

Interpretation:

The alkene from which the alcohol shown can be prepared is to be stated. Among the two, epoxide hydrolysis and OsO₄, the method which can be used to prepare the diol also is to be stated.

Concept introduction:

During epoxidation an oxygen atom is transferred to the double bond in alkene with syn stereochemistry. Both C-O bonds are formed o the same face of the double bond. The epoxides undergo a acid catalyzed hydrolysis during which the ring is opened to give a trans-1,2-diol.

The hydroxylation with OsO₄ also occurs with syn stereochemistry. The addition of OsO₄ to the alkene gives a cyclic osmate which is cleaved by using aqueous NaHSO₃ to yield a cis-1,2-diol.

To state:

The alkene from which the alcohol shown can be prepared. Further to state, among epoxide hydrolysis and OsO₄, the method which can be used to prepare the diol.

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