Chemistry - Complete P-block Question with Solution | TestHub

ChemistryComplete P-blockp-Block 15,16Medium2 minQB

ChemistryMediumsingle choice

Select the incorrect statement :

Options:

Answer:

Solution:

The incorrect statement is D. Dilution of oleum ( $H_{2} S_{2} O_{7}$ ) with water gives sulfuric acid ( $H_{2} S O_{4}$ ), not sulfurous acid ( $H_{2} S O_{3}$ ). Sulfurous acid is formed when $S O_{2}$ dissolves in water.

Explanation of options:

A. Correct. $S O_{3} + H_{2} S O_{4} \to H_{2} S_{2} O_{7}$ (Oleum)

B. Correct. $S O_{2}$ is purified to remove impurities like dust and arsenic compounds before catalytic oxidation.

C. Correct. $2 S O_{2} + O_{2} V_{2} O_{5} 2 S O_{3}$ is the key step in the Contact Process.

D. Incorrect. $H_{2} S_{2} O_{7} + H_{2} O \to 2 H_{2} S O_{4}$ . Dilution of oleum yields sulfuric acid.

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

⏱ 2mℹ️ Source: QB

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