Comment on the nature of two S-O bonds formed in SO2 molecul

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 Multiple Choice QuestionsShort Answer Type

391. Why does O3 act as a powerful oxidising agent?
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392. How is O3 estimated quantitatively?
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393. What happens when sulphur dioxide is passed into aqueous solution of Fe (III) salt?
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394. Comment on the nature of two S-O bonds formed in SO2 molecule. Are the two S-O bonds in this molecule equal?


Both the S-O bonds are covalent and have equal strength due to resonating structures.
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395. How is the presence of SO2 detected?
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396. Mention three areas in which H2SO4 plays an important role.
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397. Write the conditions to maximise the yield of H2SO4 by contact process.
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398. Why is Ka2 < < Ka, for H2SO4 in water?
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399. Considering the parameters such as bond dissociation enthalpy, electron gain enthalphy and hydration enthalpy compare the oxidising power of F2 and Cl2.
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400. Give two examples to show the anomalous behaviour of fluorine.
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