The most efficient agent for the absorption of SO3 is

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The most efficient agent for the absorption of ${SO}_{3}$ is

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$20 % H_{2} S_{2} O_{7}$

$98 % H_{2} {SO}_{4}$

$80 % H_{2} {SO}_{4}$

$50 % H_{2} {SO}_{4}$

answer is B.

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Detailed Solution

$98 % H_{2} {SO}_{4}$ is used for absorbing dense fog of acid which is farmed by dissolving ${SO}_{3}$ in water. Hence 98 % H₂SO₄is the most efficient agent for the absorption of ${SO}_{3}$

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