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Potassium Dichromate

For each of t...

Question

For each of the following reaction in acidic solution, predict the products and write the net balanced ionic equation :

$C o^{3 +} (a q) + H_{2} O (l) \to$

4 C o^{3 +} (a q) + H_{2} O (l) \to 4 C o^{+} (a q) + O_{2} (g) + H^{+} (a q)

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4 C o^{3 +} (a q) + H_{2} O (l) \to 2 C o^{2 +} (a q) + O_{2} (g) + H^{+} (a q)

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4 C o^{3 +} (a q) + 2 H_{2} O (l) \to 4 C o^{2 +} (a q) + O_{2} (g) + 4 H^{+} (a q)

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None of these

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Solution

The correct option is C $4 C o^{3 +} (a q) + 2 H_{2} O (l) \to 4 C o^{2 +} (a q) + O_{2} (g) + 4 H^{+} (a q)$

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Similar questions

S_{2} O {_{6}}^{2 -} (a q) + C r_{2} O {_{7}}^{2 -} (a q) \to S_{4} O {_{6}}^{2 -} (a q) + C r^{3 +} (a q)

C u

F e

E_{c e l l}^{\circ}

I O_{3}^{-} (a q) + R e (s) \to R e O_{4}^{-} (a q) + I^{-} (a q)

Balance the following redox reactions by ion-electron method:
$M n O_{4}^{-} (a q) + I^{-} (a q) \to M n O_{2} (s) + I_{2} (s)$ (in basic medium)

$M n O_{4}^{-} (a q) + S O_{2} (g) \to M n^{2 +} (a q) + (a q) H S O_{4 (a q)}^{-}$ (in acidic solution)

$H_{2} O_{2} (a q) + F e^{2 +} (a q) \to F e^{3 +} (a q) + H_{2} O (l)$ (in acidic solution)

$C r_{2} O_{7}^{2 -} + S O_{2} (g) \to C r^{3 +} (a q) + S O_{4}^{2 -}$ (aq) (in acidic solution)

H_{2} O_{2}

H_{2} O

O

H_{2} O_{2 (a q)} + I_{(a q)}^{-} \to H_{2} O_{(l)} + I O_{(a q)}^{-}

H_{2} O_{2 (a q)} + I_{(a q)}^{-} \to H_{2} O_{(l)} + O_{2} (g) + I O_{(a q)}^{-}

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