Which of the following anionic radicals cannot be identified by diluted $H_{2} S O_{4}$ ?

N O_{2}^{-}

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S O_{3}^{2 -}

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C l^{-}

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C O_{3}^{2 -}

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Solution

The correct option is B $S O_{3}^{2 -}$
$\Rightarrow$ By the dilution of $H_{2} S o_{4}$
for the test of $C O_{3}^{2 -}$
$\Rightarrow C O_{2 -}^{3} + d i l u t e H_{2} S O_{4}$ = colorless + colorless gas $(C O_{2}$ gas evolved) $(C O_{2})$
$c l^{-}$ + diluted $H_{2} S O_{4}$ = NO-
$S O_{3}^{2}$ +dilute $H_{2} S O_{4} =$ colorless gas like Burning sulfur $(S O_{2}$ gas evolved )
$N O_{2}^{-} +$ dilute $H_{2} S O_{4}$ = Brown fumes $(N O_{2}$ gas evolved)
option A,B, D

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Similar questions

Q. Which of the following anions are identified by

d i l . H_{2} S O_{4}

(i)

C O_{3}^{2 -}

(ii)

S O_{3}^{2 -}

(iii)

S_{2} O_{3}^{2 -}

(iv)

N O_{3}^{2 -}

(v)

I^{⊖}

(vi)

C_{2} O_{4}^{2 -}

[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] are

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

Q. Find the number of ions which are identified by dil HCl from the following:

(I)

C O_{3}^{2 -}

(II)

S O_{3}^{2 -}

(III)

S O_{4}^{2 -}

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Which of the following anionic radicals cannot be identified by diluted H2SO4?

Which of the following anionic radicals cannot be identified by diluted $H_{2} S O_{4}$ ?