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Why is H(2)O a liquid and H(2)S a gas?...

Why is `H_(2)O` a liquid and `H_(2)S` a gas?

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`H_(2)O` has oxygen as the central atom. Oxygen has smaller size and higher electronegativity as compared to sulphur. Therefore, there is extensive hydrogen bonding in `H_(2)O`, which is absent in `H_(2)S`. Molecules of H2S are held together only by weak van der `Waal’`s forces of attraction.
Hence, `H_(2)O` exists as a liquid while `H_(2)S` as a gas.
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Why is H_(2)S less acidic than H_(2)Te ?

Why is H_(2)S less acidic than H_(2)Te ?

Why is H_2S more acidic than H_2O ?

Water is a liquid, while H_2 S is a gas at ordinary temperature. Explain.

Which of the following metal reacts with cold H_(2)O with the evolution of H_(2) gas?

Why is H_2SO_4 not a drying agent for H_2S ?

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NCERT ENGLISH-THE P-BLOCK ELEMENTS-EXERCISE
  1. List the important sources of sulphur.

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  2. Write the order of thermal stability of the hydrides of group 16 eleme...

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  3. Why is H(2)O a liquid and H(2)S a gas?

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  4. Which of the following does not react with oxygen directly? Zn,Ti,Pt,F...

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  5. Complete the following reactions: (i) C(2) H(4) + O(2) to (ii)...

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  6. Why does O3 act as a powerful oxidising agent?

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  7. How is O(3) estimated quantitatively ?

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  8. What happens when sulphur dioxide is passed through an aqueous solutio...

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  9. Comment on the nature of two S–O bonds formed in SO(2) molecule. Are t...

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  10. How is the presence of SO2 detected?

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  11. Mention three areas in which H2SO4 plays an important role.

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  12. Write the conditions to maximise the yield of H2SO4 by contact process...

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

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

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  15. Give two examples to show the anomalous behavious of fluorine.

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

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  17. Give the reason for bleaching action of Cl2.

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

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  19. Why is ICI more reactive than I2?

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  20. Why is helium used in diving apparatus?

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