ChemistryAlkali metal chloride soluble in Ethanol is

Alkali metal chloride soluble in Ethanol is

  1. A
    NaCl
  2. B
    LiCl
  3. C
    CsCl
  4. D
    KCl

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    Solution:

    A) Except LiCl, LiBr and LiI all halides of first group are Ionic.

    B) Most ionic halide is CsF.(Large cation and small anion)

    C) Least ionic halide is LiI..(Small cation large anion)

    D) LiCl, LiBr and LiI are soluble in Ethyl alcohol,acetone and ethyl acetate.

    E) LiCl is soluble in pyridine also.

    F)  Except LiCl, LiBr and LiI all halides of first group are Ionic with ccp(fcc) or bcc(Caesium halides).

    G) f0H values are negative for all halides of first group.

    H) f°H values become less negative from LiF to CsF, themal stability decreases from LiF to CsF.

    I) f°H values become more negative from LiX to CsX, themal stability decreases from LiX to CsX (X= -Cl, -Br, -I).

    J) Hydration enthalpy and Lattice enthalpy are high for LiF. Lattice enthalpy dominates.

        Low solubility of LiF is due to high Lattice enthalpy.

    K) Hydration enthalpy and Lattice enthalpy are low for CsI. Lattice enthalpy dominates.

        Low solubility of CsI is due to low hydration enthalpy.

    L) Thermal stability and melting point of MF>MCl>MBr>MI.(M= Alkali metal).

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