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Hydrogen bonds are formed in many compou...

Hydrogen bonds are formed in many compounds e.g., `H_2O,HF,NH_3`. The boiling point such compounds depends to a large extent on the strength of hydrogen bond and the number of hydrogen bonds. The correct decreasing order of boiling points of above compounds is

A

`HFgtH_2OgtNH_3`

B

`H_2OgtHFgtNH_3`

C

`NH_3gtHFgtH_2O`

D

`NH_3gtH_2OgtHF`

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • The hydrogen bonds are encountered in HF, H_2O, NH_3 and HF_2^- . The relative order of energies of hydrogen bonds is

    A
    `HFgtH_2OgtNH_3gtHF_2^-`
    B
    `H_2O^-gtHF_2^-gtHFgtNH_3`
    C
    `HFgtHF_2^-gtH_2OgtNH_3`
    D
    `HF_2^-gtHFgtH_2OgtNH_3`

  • Which of the following compounds contain ionic, covalent, coordinate covalent and hydrogen bonds ?

    A
    `NH_4Cl`
    B
    KCN
    C
    `CuSO_4cdot5H_2O`
    D
    NaOH

  • (I)1,2-dihydroxybenzene (II)1,3-dihydroxybenzene (III)1,4-hydroxybenzene (IV)Hydroxybenzene The increasing order of boiling points of the above mentioned compounds is

    A
    `I lt II lt III lt IV`
    B
    `I lt II lt IV lt III`
    C
    `IV lt I lt II lt III`
    D
    `IV lt II lt I lt III`

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