The formation of alkene 2-phenyl-2-butene is E or Z has to be explained from tosylate of (2R,3R)-3-phenyl-2-butanol via E2 elimination, similarly, the formation of alkene 2-phenyl-2-butene is E or Z has to be explained from tosylate of (2S,3R) and (2S,3S) tosylates -3-phenyl-2-butanol via E2 elimination. Concept introduction: Elimination reaction: An elimination reaction is removal of two substituents in a molecule and forms alkene. An elimination reaction is one or two-step process which based on the mechanism when two substituents removed from the molecule in single step is called E2 reaction. When two substituents are removed from the molecule in two steps is called E1 reaction. E2 elimination: Alkyl halide forms an alkene from the abstraction of the proton from the Î²-carbon atom followed by elimination of the bromine in a single step. Given information: The given compound is shown below,

Question

Propagation of uncertainty. You have a stock solution certified by the manufacturer to contain 150.0±0.03 µg SO42-/mL. You would like to dilute it by a factor of 100 to obtain 1.500 µg/mL. Calculate the uncertainty in the two methods of dilution below. Use the following uncertainty values for glassware: Glassware Uncertainty (assume glassware has been calibrated and treat the values below as random error) 1.00 mL volumetric pipet 0.01 mL 10.00 mL volumetric pipet 0.02 mL 100.00 mL volumetric flask 0.08 mL Transfer 10.00 mL with a volumetric pipet and dilute it to 100 mL with a volumetric flask. Then take 10.00 mL of the resulting solution and dilute it a second time with a 100 mL flask. 2. Transfer 1.00 mL with a volumetric pipet and dilute it to 100 mL with a volumetric flask.

Answer 1

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Chapter 11.SE, Problem 65AP

Interpretation Introduction

Interpretation:

The formation of alkene 2-phenyl-2-butene is E or Z has to be explained from tosylate of (2R,3R)-3-phenyl-2-butanol via E2 elimination, similarly, the formation of alkene 2-phenyl-2-butene is E or Z has to be explained from tosylate of (2S,3R) and (2S,3S) tosylates -3-phenyl-2-butanol via E2 elimination.

Concept introduction:

Elimination reaction: An elimination reaction is removal of two substituents in a molecule and forms alkene. An elimination reaction is one or two-step process which based on the mechanism when two substituents removed from the molecule in single step is called E2 reaction. When two substituents are removed from the molecule in two steps is called E1 reaction.

E2 elimination:Alkyl halide forms an alkene from the abstraction of the proton from the Î²-carbon atom followed by elimination of the bromine in a single step.

Given information:

The given compound is shown below,

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