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Methods to Form Lyophobic Colloids

Most stable h...

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Most stable hydrogen bonding present in :- (1) F–H-----F–H (4) F–H------F–

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Q. Calculate the electronegativity of fluorine from the following data:
Bond energy of H-H bond

E_{H - H} = 104.2 k c a l m o l^{- 1}

Bond energy of F-F bond

E_{F - F} = 36.6 k c a l m o l^{- 1}

Bond energy of H-F bond

E_{H - F} = 134.6 k c a l m o l^{- l}

Electronegativity of Hydrogen

X_{H} = 2.1.

Q. Calculate the electronegativity of fluorine from the following data:
Bond energy of H-H bond

E_{H - H} = 104.2 k c a l m o l^{- 1}

Bond energy of F-F bond

E_{F - F} = 36.6 k c a l m o l^{- 1}

Bond energy of H-F bond

E_{H - F} = 134.6 k c a l m o l^{- l}

Electronegativity of Hydrogen

X_{H} = 2.1.

Q. Find the enthalpy of formation of hydrogen flouride on the basis of following data:
Bond energy of

H - H b o n d = 434 k J m o l^{- 1}

F - F b o n d = 158 k J m o l^{- 1}

H - F b o n d = 565 k J m o l - 1

The hydrogen bond is shortest in F - H ........F .

Q. Arrange the following in the decreasing order of hydrogen bonding :

C H_{4}

C H_{3} - O H

C H_{3} - F

C H_{3} - N H_{2}

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