Write the net ionic equation for the reaction of potassium dichromate $(V I)$ , $K_{2} {C r}_{2} O_{7}$ with sodium sulphite, ${N a}_{2} {S O}_{3}$ in an acid solution to give chromium $(I I I)$ ion and the sulphate ion.

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Solution

The equation is;
$C r_{2} O_{7}^{2 -} (a q) + 3 S O_{3}^{2 -} (a q) + 8 H^{+} (a q) \to 2 C r^{3 +} (a q) + 3 S O_{4}^{2 -} (a q) + 4 H_{2} O (l i q)$

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Similar questions

Balanced ionic equation for the reaction of Potassium Dichromate (VI) K₂Cr₂O₇ with Sodium Sulphite Na₂SO₃ in acid solution to give Chromium (III) ion and sulphate ion is

Q. In an oxidation-reduction reaction, dichromate

({C r}_{2} O_{7}^{- 2})

ion is reduced to

{C r}^{+ 3}

ion. The equivalent weight of

K_{2} {C r}_{2} O_{7}

in this reaction is:

Q. When potassium dichromate,

K_{2} {C r}_{2} O_{7}

is converted into

K_{2} C r O_{4}

, the change in oxidation number of chromium is :

Q. Write ionic equations for the reaction of dichromate ions with
i) hydroxyl ions
ii)

F e^{+ 2}

ions in Acidic medium
In which one of the above two reactions will the oxidation number of chromium remains unchanged?

Q. Give balanced equations for the following reactions :
(i) Silver nitrate is added to dilute solution of sodium thiosulphate.
(ii) Potassium dichromate is treated with acidified ferrous sulphate solution.
(iii) Phosphorous reacts with conc. sulphuric acid.

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Write the net ionic equation for the reaction of potassium dichromate (VI), K2Cr2O7 with sodium sulphite, Na2SO3 in an acid solution to give chromium (III) ion and the sulphate ion.

The equation is;Cr2O2−7(aq)+3SO2−3(aq)+8H+(aq)→2Cr3+(aq)+3SO2−4(aq)+4H2O(liq)

Write the net ionic equation for the reaction of potassium dichromate $(V I)$ , $K_{2} {C r}_{2} O_{7}$ with sodium sulphite, ${N a}_{2} {S O}_{3}$ in an acid solution to give chromium $(I I I)$ ion and the sulphate ion.

The equation is;
$C r_{2} O_{7}^{2 -} (a q) + 3 S O_{3}^{2 -} (a q) + 8 H^{+} (a q) \to 2 C r^{3 +} (a q) + 3 S O_{4}^{2 -} (a q) + 4 H_{2} O (l i q)$