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Write the conditions to maximise the yie...

Write the conditions to maximise the yield of `H_(2)SO_(4)` by Contact process.

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The most important step in the production of `H_(2)SO_(4)` is the oxidation of `SO_(2)` to `SO_(3)`.
`2SO_(2)(g)+O_(2)(g)hArr2SO_(3)(g),Delta_(f)H^(0)=-196.6kJcdotmol^(-1)`
The reaction is reversible, exothermic and the forward reaction proceeds with decrease in volume. Therefore, according to Le-Chatelier's principle, to maximise the yield of `SO_(3)` and thereby of `H_(2)SO_(4)` , a low temperature and a high pressure are required. Hence, the optimum conditions are :
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CHHAYA PUBLICATION-P-BLOCK ELEMENTS-SOLVED NCERT TEXTBOOK PROBLEMS
  1. What happens when- SO(3) is passed through water.

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  2. Mention three areas in which H(2)SO(4) plays an important role.

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  3. Write the conditions to maximise the yield of H(2)SO(4) by Contact pro...

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  4. Why is K(a(2))ltltK(a(1)) for H(2)SO(4) in water?

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  5. Halogens have maximum negative electron gain enthalpy in the respectiv...

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  6. Although electron gain enthalpy of fluorine is less negative as compar...

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  7. Fluorine exhibits only -1 oxidation state whereas other halogens exhib...

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  8. Considering the parameters such as bond dissociation enthalpy, electro...

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  9. Give two examples to show the anomalous behaviour of fluorine.

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  10. Sea is the greatest source of some halogens. Comment.

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  11. Write the balanced chemical equation for the reaction of Cl(2) with ho...

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  12. Give the reason for bleaching action of Cl(2).

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  13. Name two poisonous gases which can be prepared from chlorine gas.

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  14. When HCl reacts with finely powdered iron, it forms ferrous chloride a...

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  15. Deduce the molecular shape of BrF(3) on the basis of VSEPR theory.

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  16. Why is ICI more reactive than I(2) ?

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  17. Why are elements of Group-18 known as noble gases?

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  18. Noble gases have very low boiling points. Why?

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  19. Does the hydrolysis of XeF(6) lead to a redox reaction?

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  20. Why is helium used in diving apparatus?

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