From the electrostatic potential map of (trifluoromethyl) benzene, C 6 H 5 CF 3 , whether it will be more reactive or less reactive than toluene towards electrophilic substitution is to be stated and explained. Concept introduction: In the electrostatic potential map the electron rich regions are indicated in red and electron poor regions are indicated in green. In aromatic electrophilic substitution reactions of the monosubstituted benzenes, if the group already present is electron releasing it will activate the ring and hence the monosubstituted benzene will be more reactive than benzene. If it is electron withdrawing it will deactivate the ring and hence the monosubstituted benzene will be less reactive than benzene. To state and explain: From the electrostatic potential map of (trifluoromethyl) benzene, C 6 H 5 CF 3 , whether it will be more reactive or less reactive than toluene towards electrophilic substitution.

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Reagan is doing an atomic absorption experiment that requires a set of zinc standards in the 0.4-1.6 ppm range. A 1000 ppm Zn solution was prepared by dissolving the necessary amount of solid Zn(NO3)2 in water. The standards can be prepared by diluting the 1000 ppm Zn solution. Table 1 shows one possible set of serial dilutions (stepwise dilution of a solution) that Reagan could perform to make the necessary standards. Solution A was prepared by diluting 5.00 ml of the 1000 ppm Zn standard to 50.00 ml. Solutions C-E are called "calibration standards" because they will be used to calibrate the atomic absorption spectrometer. a. Compare the solution concentrations expressed as ppm Zn and ppm Zn(NO3)2. Compare the concentrations expressed as M Zn and M Zn(NO3)2 - Which units allow easy conversion between chemical species (e.g. Zn and Zn(NO3)2)? - Which units express concentrations in numbers with easily expressed magnitudes? - Suppose you have an analyte for which you don't know the molar…

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Question

Chapter 16.4, Problem 11P

Interpretation Introduction

Interpretation:

From the electrostatic potential map of (trifluoromethyl) benzene, C₆H₅CF₃, whether it will be more reactive or less reactive than toluene towards electrophilic substitution is to be stated and explained.

Concept introduction:

In the electrostatic potential map the electron rich regions are indicated in red and electron poor regions are indicated in green.

In aromatic electrophilic substitution reactions of the monosubstituted benzenes, if the group already present is electron releasing it will activate the ring and hence the monosubstituted benzene will be more reactive than benzene. If it is electron withdrawing it will deactivate the ring and hence the monosubstituted benzene will be less reactive than benzene.

To state and explain:

From the electrostatic potential map of (trifluoromethyl) benzene, C₆H₅CF₃, whether it will be more reactive or less reactive than toluene towards electrophilic substitution.

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Reagan is doing an atomic absorption experiment that requires a set of zinc standards in the 0.4-1.6 ppm range. A 1000 ppm Zn solution was prepared by dissolving the necessary amount of solid Zn(NO3)2 in water. The standards can be prepared by diluting the 1000 ppm Zn solution. Table 1 shows one possible set of serial dilutions (stepwise dilution of a solution) that Reagan could perform to make the necessary standards. Solution A was prepared by diluting 5.00 ml of the 1000 ppm Zn standard to 50.00 ml. Solutions C-E are called "calibration standards" because they will be used to calibrate the atomic absorption spectrometer. a. Compare the solution concentrations expressed as ppm Zn and ppm Zn(NO3)2. Compare the concentrations expressed as M Zn and M Zn(NO3)2 - Which units allow easy conversion between chemical species (e.g. Zn and Zn(NO3)2)? - Which units express concentrations in numbers with easily expressed magnitudes? - Suppose you have an analyte for which you don't know the molar…

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