Chemistry - Complete P-block Question with Solution | TestHub

ChemistryComplete P-blockp-Block 15,16Medium2 minQB

ChemistryMediumsingle choice

Passage / Comprehension

The hydrogen atoms connected in the form of -OH bonds with central atom in an oxy-acid is called acidic hydrogen. oxyacid contains atleast one acidic hydrogen.

Select the oxyacid in which peroxy linkage is available.

Options:

Answer:

Solution:

To identify a peroxy linkage (-O-O-), calculate the oxidation state of the central atom. If it exceeds the maximum possible oxidation state, a peroxy linkage is present.

For H₄P₂O₈:

Let the oxidation state of P be $x$ .

$4 (+ 1) + 2 (x) + 8 (- 2) = 0$

$4 + 2 x - 16 = 0$

$2 x = 12$

$x = + 6$

The maximum oxidation state for phosphorus is +5 (group 15). Since +6 > +5, H₄P₂O₈ contains a peroxy linkage.

The structure of H₄P₂O₈ (peroxodiphosphoric acid) contains a P-O-O-P linkage.

Stream:JEESubject:ChemistryTopic:Complete P-blockSubtopic:p-Block 15,16

⏱ 2mℹ️ Source: QB

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