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Why are fumes seen when barium halides a...

Why are fumes seen when barium halides are kept in open air ?

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In open air, barium halide undergoes hydrolysis by water vapour (moisture) and fumes of halogen acid (except HF) evolve.
`BeX_2 + 2H_2O to Be(OH)_2 + 2HX`(X = Halogens except F)
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CHHAYA PUBLICATION-s-BLOCK ELEMENTS -SOLVED WBCHSE SCANNER
  1. What is diagonal relationship? Give one example.

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  2. Which one of the following chlorides is soluble in organic solvent-

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  3. Which of the following alkaline earth metal carbonates is thermally le...

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  4. Why is LiCl soluble in organic solvent?

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  5. Why are fumes seen when barium halides are kept in open air ?

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  6. Alkali metals become opaque when they are kept open in air-Why?

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  7. Write the basic principles of Solvay process.

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  8. BaSO4 is insoluble in water, but BeSO4 is soluble in water-Explain.

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  9. Cause of different colour of the flame in flame test is -

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  10. Which of the following alkaline earth metal sulphate is most soluble i...

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  11. Why do most of the lithium salts are present as hydrated one?

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  12. Which of the alkaline earth metal hydroxide are amphoteric in nature.

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  13. What is hydrolyth?

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  14. What will be the order of reducing powder of the following elements- ...

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  15. What happens when LiNO3 is strongly heated? Write down the equation.

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  16. Which two alkaline earth metals cannot be identified by flame test?

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  17. Write down the preparation of Plaster of Paris with equation.

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  18. Which one of the following elements shows diagonal relationship with m...

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  19. Sodium is preserved in which of the following liquids-

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  20. Write the principle, with balanced chemical equations, of preparation ...

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