$X + H_{2} S O_{4} \to Y$
$Y + K_{2} C r_{2} O_{7} +$ $H_{2} S O_{4} \to$ Green solution.
$Y$ is a colorless gas with irritating smell.
$X$ and $Y$ are respectively:

$S O_{3}^{2 -}, S O_{2}$

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$C l^{-}, H C l$

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$S^{2 -}, H_{2} S$

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$C O_{3}^{2 -}, C O_{2}$

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Solution

The correct option is A
$S O_{3}^{2 -}, S O_{2}$

$S O_{3}^{2 -} + H_{2} S O_{4} \to$ $S O_{2} + H_{2} O$

$S O_{2} + K_{2} C r_{2} O_{7} + H_{2} S O_{4} \to K_{2} S O_{4} + C r_{2} (S O_{4})_{3} + H_{2} O$

Hence,
$X = S O_{3}^{2 -}$ and $Y = S O_{2}$

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Similar questions

$X + H_{2} S O_{4} \to Y$
$Y + K_{2} C r_{2} O_{7} +$ $H_{2} S O_{4} \to$ Green solution.
$Y$ is a colorless gas with irritating smell.
$X$ and $Y$ are respectively:

[X] + H_{2} S O_{4} \to [Y]

a colorless gas with irritating smell,

[Y] + K_{2} C r_{2} O_{7} + H_{2} S O_{4} \to

Green solution,

[X]

and

[Y]

is:

[X] + H_{2} S O_{4} ⟶ [Y]

Colorless gas with irritating smell

[Y] + H_{2} S O_{4} + K_{2} C r_{2} O_{7} ⟶ G r e e n s o l u t i o n

[X] and [Y] are:

[X] + H_{2} S O_{4} \to [Y]

; a colourless gas with irritating smell

[Y] + K_{2} C r_{2} O_{7} + H_{2} S O_{4} \to

Green solution

[X]

and

[Y]

are:

[X] + H_{2} S O_{4} \to [Y]

a colourless gas with irritating smell

[Y] + K_{2} C r_{2} O_{7} + H_{2} S O_{4} \to

green solution

[X]

and

[Y]

is:

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X+H2SO4→Y Y+K2Cr2O7+ H2SO4→ Green solution. Y is a colorless gas with irritating smell. X and Y are respectively:

The correct option is A SO2−3,SO2 SO2−3+H2SO4→ SO2+H2O SO2+K2Cr2O7+H2SO4→K2SO4+Cr2(SO4)3+H2O Hence, X = SO2−3 and Y = SO2

$X + H_{2} S O_{4} \to Y$
$Y + K_{2} C r_{2} O_{7} +$ $H_{2} S O_{4} \to$ Green solution.
$Y$ is a colorless gas with irritating smell.
$X$ and $Y$ are respectively:

The correct option is A
$S O_{3}^{2 -}, S O_{2}$

$S O_{3}^{2 -} + H_{2} S O_{4} \to$ $S O_{2} + H_{2} O$

$S O_{2} + K_{2} C r_{2} O_{7} + H_{2} S O_{4} \to K_{2} S O_{4} + C r_{2} (S O_{4})_{3} + H_{2} O$

Hence,
$X = S O_{3}^{2 -}$ and $Y = S O_{2}$