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Standard XII

Chemistry

Metal Carbonyls

Compare the s...

Question

Compare the structures of $H_{2} O$ and $H_{2} O_{2}$ .

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Solution

In gaseous phase, water molecule has a bent form with a bond angle of ${104.5}^{\circ}$ . The O - H bond length is 95.7 pm. The structure can be shown as:

Hydrogen peroxide has a non-planar structure both in gas and solid phase. The dihedral angle in gas and solid phase is ${111.5}^{\circ}$ and ${90.2}^{\circ}$ respectively. The O-O linkage present on the molecule called 'peroxide' linkage.

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Q. Assertion :In gaseous phase,

H_{2} O

and

H_{2} O_{2}

both have bent structures. Reason: Bond angle of both

H_{2} O

and

H_{2} O_{2}

{104.5}^{0}

How will you concentrate $H_{2} O_{2} ?$ Show differences between structures of $H_{2} O_{2}$ and $H_{2} O$ by drawing their spatial structures. Also mention three important uses of $H_{2} O_{2} .$

Q. the correct increasing order of acidity of

C O_{2}, H_{2} O

and

H_{2} O_{2}

is:

Q. i)

H_{2} O_{2} \to H_{2} O + (o)

ii)

H_{2} O_{2} + 2 I^{-} \to I_{2} + 2 O H^{-}, H_{2} O_{2}

acts as:

H_{2} O a n d H_{2} O_{2}

resembles in

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Metal Carbonyls

Standard XII Chemistry

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Compare the structures of H2O and H2O2.

Compare the structures of $H_{2} O$ and $H_{2} O_{2}$ .