Tutor profile: Adam R.
Subject: Organic Chemistry
Explain how phenol is more reactive to electrophilic substitution than benzene.
The -OH substituent in phenol has a lone electron pair localised on the oxygen atom. This lone pair can be partially delocalised into the aromatic ring system, increasing its electron density and, thus, activating the ring. This allows phenol to be more susceptible to electrophilic attack than benzene which lacks this OH substituent.
Explain the significance of the d block contraction.
The d-block contraction refers to the effect on the properties of the period 4 elements due to the complete filling of the (3)d orbitals with electrons.
Subject: Basic Chemistry
What salt is obtained through the reaction of Hydrochloric acid and Sodium Hydroxide?
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