101.Why halogens delocalize electrons in the benzene ring in the order F > Cl > Br > I?
The smaller is the halogen atom, the shorter is the C-halogen bond and the more effective is the overlap of p-orbitals by extended bonding. Hence, the smaller the halogen atom, the more extensive is delocalization.
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102.
An organic compound ‘A’ on treatment with KCN gave B which on hydrolysis with dil. HCl gave active acid. Identify ‘A’.
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103.
Write the chemical equations for the conversion of chloroform to acetic acid.
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104.
What happens when chloroform reacts with concentrated nitric acid?
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105.
How would you bring about the following conversion: 1-butane to 1-chloro butane?
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106.
The use of chloroform as anaesthesia is decreasing. why?
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107.
Write the structural formula of 1-bromo-2, 2-dimethyl propane.
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108.
Write a convenient method of preparation of iodoalkanes.
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109.
Complete the question:
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110.Complete the following: C2H5OH + KBr + H2SO4 excess →
Short Answer Type
bonding. Hence, the smaller the halogen atom, the more extensive is delocalization.
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