1.

Which of the following is not true for ozone ?

Answer»

It is a strong sterilizing agent
It attacks organic compounds containing carbon-carbon doubles bond
Its molecular is linear and has two different O-O bond lengths
It is more powerful oxidising agent than molecular oxygen

Solution :It is a bent molecule and is the resonarnce hybrid of following two forms, due to which all O-O bonds are equivalent.O-O bond length (128 pm) is smaller than O-O single bond (148 pm), but larger than O double bond (110 pm).

a) `O_3` is also used as disinfectant. Its advantage over chlorine for purifying drinking water is that it avoids the unpleasant smell and bad taste of chlorine.
b) Reaction of alkene with `O_3`, followed by TREATMENT with Zn in presence of water to FORM carbonyl compounds is CALLED ozonolysis.
`ge C=C le underset(2. Zn//H_(2)O)overset(1. O_(3))to ge C=O+O=C le`
(d) After `F_2, O_3` is most powerful oxidant, e.g.,
`PbS+4O_(3) to PbSO_(4)+2O_(2)`


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