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Properties of Bi-phenyl - Hydrocarbon
Bi-phenyl is a colourless solid, melting point 71°C. It goes through usual electrophilic replacement reactions. As aryl set are electron withdrawing, they should comprise deactivating and m-orientating effect. Although, it has been generally given that presence of one benzene ring activates the other for electrophilic substitution and directs the incoming group to o- and p- positions. It has been specified that monosubstitution in the bi-phenyl results in the formation of para isomer like the main product.
Another unique feature of the biphenyl is the behaviour in the direction of second substitution in a monosubstituted biphenyl. The second replacement invariably includes the unsubstituted ring in the ortho and para position no matter what is the nature of substituent previously present.
8ml of NaOH solution were used to titrate 10ml of H2C2O4.2H2O,C(1/2H2C2O4.2H2O)=0.05ML.
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