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If the bond dissociation energies of XY,...

If the bond dissociation energies of XY, `X_(2)` and `Y_(2)` (all diatomic molecules) are in the ratio of `1 : 1 : 0.5` and `Delta_(f)H` for the formation of XY is –200 kJ `mol^(-1)`. The bond dissociation energy of `X_(2)` will be

A

200 kJ `mol^(-1)`

B

100 kJ `mol^(-1)`

C

800 kJ `mol^(-1)`

D

300 kJ `mol^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • If the bond dissociation energies of XY,X_(2) and Y_(2) (all diatomic molecules) are in the ratio of 1:1:0.5 and DeltaH_(f) for the formation of XY is -200 kJ mol^(-1) . The bond dissociation energy of X_(2) will be

    A
    400 kJ `mol^(-1)`
    B
    300 kJ `mol^(-1)`
    C
    20 kJ `mol^(-1)`
    D
    none of these

  • If the bond dissociation energies of XY , X_(2) and Y_(2) ( all diatomic molecules )are in the ratio 1:1 : 0.5 and DeltaH _(f) for the formation of XY of - 200 kJ mol^(-1) , the bond dissociation energy of X_(2) will be

    A
    `100 kJ mol^(-1)`
    B
    `200 kJ mol^(-1)`
    C
    ` 400 kJ mol^(-1)`
    D
    ` 800 kJmol^(-1)`

  • If the bond dissociation energies of XY, X_2 and Y_2 (all diatomic molecules)are in the ratio of 1:1:0.5 and Delta_fH for the formation of XY is -200kJ mol^(-1) .The bond dissociation energy of X_2 will be

    A
    100kJ `mol ^(-1)`
    B
    800kJ `mol ^(-1)`
    C
    `300kJ` `mol ^(-1)`
    D
    `400kJ` `mol ^(-1)`