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Hydrogen — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryHydrogen3 Marks
Question
i. Why is $\mathrm{H}_2 \mathrm{O}_2$ syrupy liquid?
ii. Is $\mathrm{H}_2 \mathrm{O}_2$ paramagnetic or diamagnetic, why?
iii. Which has higher dipole moment $\mathrm{H}_2 \mathrm{O}_2$ or $\mathrm{H}_2 \mathrm{O}$, why?
✓

Answer

i. $\mathrm{H}_2 \mathrm{O}_2$ is associated with intermolecular H -bonding.
ii. $\mathrm{H}_2 \mathrm{O}_2$ is diamagnetic because $\mathrm{O}^{2-}{ }_2$ does not have unpaired electrons.
iii. $\mathrm{H}_2 \mathrm{O}_2$ has higher dipole moment because it has open book structure and both $\mathrm{O}-\mathrm{H}$ group are.
not in same plane. It is more polar than water.

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