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(i)Explain the homolytic fission of a covalent bond? (ii) Why chloroacetic acid is more acidic than acetic acid? |
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Answer» Solution :(i)1. Homolytic CLEAVAGE is the process in which a co leavage is the process in which a covalent bond breaks symmetrically in such way that each of the bondedatom retains on electron 2. This one of eleavage occurs under high temperature or in the presence of UV light. In a compound CONTAINING non-polar convalent bond formed between atoms of similar electronegativity in such molecules the cleavage of bonds result into free RADICALS. 4. For example, ethane UNDERGO homolytic fission to produce, two methyl free radical  (ii)Chloro acetic acid: `CllarrCH_2larroverset(O)overset(||)ClarrOlarrH` Chloro acetic acid has Cl-group and it has high electronegativity and show -I EFFECT Therfore Cl-atom to facilitate the dissociation of O-H bond very fastly. Thus chloro acetic acid is stronger acid than acetic acid. |
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