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Do as directed : F2,Cl2,Br2,I2 (increasi...

Do as directed : `F_2,Cl_2,Br_2,I_2` (increasing bond dissociation energy)

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Arrange the following in the order of property indicated set. F_(2),Cl_(2),Br_(2),I_(2) in the increasing bond dissociation enthalpy.

Arrange F_(2),Cl_(2),Br_(2),I_(2) in the increasing bond dissociation enthalpy. Justify your answer.

Do as directed : H_2O,H_2S, H_2Se, H_2Te (Increasing acidic strength)

Fill in the blanks : Between F_2 and Cl_2 ………….. Has lower bond dissociation energy.

Considering the parameters such as bond dissociation enthalpy,electron gain enthalpy and hydration enthalpy, compare the oxidising power of F_(2) and Cl_(2) .

F_(2) has lower bond dissociation enthalpy than Cl_(2) . Why?

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USHA PUBLICATION-P-BLOCK ELEMENTS( GR-15,GR16,GR17,GR18)-EXERCISE
  1. What is charring of sugar ?

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  2. HF is less volatile than HCl. Explain.

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  3. Do as directed : F2,Cl2,Br2,I2 (increasing bond dissociation energy)

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  4. Do as directed : H2O,H2S, H2Se, H2Te (Increasing acidic strength)

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  5. HF can form the salt KHF2 while HCl does not form KHCl2. Explain.

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  6. Give the principle of manufacture of H2SO4 by contact process.

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  7. What is the action of O3 on acidified FeSO4 solution ?

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  8. How does xenon react with O2F2 at -118^@C ?

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  9. Why does xenon form compounds only with fluorine and oxygen ?

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  10. What happens when H2S gas is passed through chlorine water ?

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  11. Why is H2SO4 called as king of the chemicals?

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  12. Tailing of mercury is due to formation of .

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  13. What happens when copper turnings are heated with conc. H2SO4 ?

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  14. Explain why SO2 is more powerful reducing agent in alkaline medium tha...

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  15. In contact process SO3 is not directly dissolved in water, explain why...

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  16. How does hydrofluoric acid react with sand ?

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  17. What happens when Zinc metal is treated with dilute H2SO4 ?

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  18. Explain that bleaching action of CL2 is permanent, while that of SO2 i...

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  19. Explain that bleaching action of CL2 is permanent, while that of SO2 i...

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  20. What happens when SO2gas is passed through lime water first slowly and...

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