Rank the compounds in each group according to their reactivity toward electrophilic substitution. 1 = most reactive; 3 = least reactive. a. benzaldehyde p-methylbenzaldehyde p-chlorobenzaldehyde b. fluorobenzene benzaldehyde o-xylene Submit AnswerTry Another Version9 item attempts remaining

benzaldehyde o-xylene-1

p-methylbenzaldehyde-1

p-chlorobenzaldehyde-2

fluorobenzene-2

benzaldehyde-3

Explanation:

Electrophilic aromatic substitution reaction refers to the replacement of a hydrogen atom on an arene ring by an electrophile. This reaction is difficult with unsubstituted benzene. However, substituents such as alkoxy and alkyl groups increases the tendency of the ring to participate in electrophilic substitution reactions due to electron donation to the ring. Other substituents, decrease the tendency of the ring to participate in electrophilic substitution and are said to deactivate the ring.

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.