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Why HF acid is stored in wax coated glas...

Why HF acid is stored in wax coated glass bottle ?

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This is because HF does not attack wax but reacts with glass. It dissolves `SiO_(2)` present in glass forming hydrofluorosilicic acid
`SiO_(2) + 6HF rarr H_(2)SiF_(6) + 2 H_(2)O`
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Explain the following with proper reason: (i) Anhydrous HCl is a bad conductor of electricity while aqueous HCl is a good conductor. (ii) HF is not stored in glass bottles but kept in wax lined bottles. (iii) HF has a greater electronegativity difference and more ionic character than HCI, HBr and Hl but it the weakest acid.

PRADEEP-P-BLOCK ELEMENTS -CONCEPTUAL QUESTION
  1. Complete the following reaction equation : NaClO(3) (aq) + SO(2)(g) ra...

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  2. More metal fluorides are ionic in nature than metal chlorides. Assign ...

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  3. Why HF acid is stored in wax coated glass bottle ?

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  4. Name the gas evolved when concentrated HCI is added to powdered potass...

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  5. Complete the following reaction equation : Ca(OCl)(2) + HCl.

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  6. Explain bleaching action of chlorine. Or Cl(2) acts as a bleaching a...

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  7. What happen when Cl(2) is passed through a hot concentrated solution o...

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  8. Arrange HClO, HBrO, HIO decreasing order of acidic strength.

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  9. Arrange HClO(4), HClO(3), HClO(2), HClO in order of (i) decreasing aci...

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  10. The acidic strength decreases in the order : HCl gt H(2)S gt PH(3). Ex...

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  11. Give appropriate reason for each of the following : Perchloric acid ...

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  12. How are interhalogen compounds formed? What general compositions can b...

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  13. Interhalogen compounds are more reactive than halogens. Why ?

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  14. Why does fluorine not play the role of a central atom in interhalogen ...

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  15. ClF(3) molecule has a bent T-shaped structure and not a trigonal plana...

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  16. Draw the structure of BrF(5).

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  17. Arrange the following : Xe, He, Kr, Rn, Ne in decreasing order of thei...

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  18. Noble gases are mostly inert. Assign reasons.

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  19. What prompted Bartlett to the discovery of noble gases compounds ?

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  20. Which reaction was used by Bartlett to prepare the first noble gas com...

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