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Complete and balance the following equation.
K₂Cr₂O₇ + KI + H₂SO₄ longrightarrow ____ + ____ + ____ + ____
$\text{K}_2\text{Cr}_2\text{O}_7 + \text{KI} + \text{H}_2\text{SO}_4 \longrightarrow$ ____ + ____ + ____ + ____
Answer
Answer
Equation: $\mathrm{K_{2}Cr_{2}O_{7}} + 6\mathrm{KI} + 7\mathrm{H_{2}SO_{4}} \longrightarrow 4\mathrm{K_{2}SO_{4}} + \mathrm{Cr_{2}(SO_{4})_{3}} + 3\mathrm{I_{2}} + 7\mathrm{H_{2}O}$
Orange dichromate is reduced to green $\mathrm{Cr^{3+}}$ and iodide is oxidised to iodine.