Which of the following is not formed when H 2 S reacts with acidic K 2 Cr 2 O 7 solution ?

The Reaction is K 2 Cr 2 O 7 + 4 H 2 SO 4 → K 2 SO 4 + Cr 2 SO 4 3 + 4 H 2 O + 3 O 3 O + 3 H 2 S → 3 H 2 O + 3 S _______________________________________________________________________ K 2 Cr 2 O 7 + 4 H 2 SO 4 + 3 H 2 S → K 2 SO 4 + Cr 2 SO 4 3 + 7 H 2 O + 3 S CrSO 4 is not formed

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ChemistryComplete d-blockd-blockEasy2 minPYQ_2014

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Which of the following is not formed when H₂S reacts with acidic K₂Cr₂O₇solution ?

Options:

Answer:

Solution:

The Reaction is

$\begin{matrix} K_{2} {Cr}_{2} O_{7} + 4 H_{2} {SO}_{4} & \to & K_{2} {SO}_{4} + {Cr}_{2} {({SO}_{4})}_{3} + 4 H_{2} O + 3 O \\ 3 O + 3 H_{2} S & \to & 3 H_{2} O + 3 S \end{matrix}$
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$\begin{matrix} K_{2} {Cr}_{2} O_{7} + 4 H_{2} {SO}_{4} + 3 H_{2} S & \to & K_{2} {SO}_{4} + {Cr}_{2} {({SO}_{4})}_{3} + 7 H_{2} O + 3 S \end{matrix}$
CrSO₄ is not formed

Stream:JEESubject:ChemistryTopic:Complete d-blockSubtopic:d-block

⏱ 2mℹ️ Source: PYQ_2014

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