The conversion of k2cr2o7 into cr2(so4)3 is a process of
Answers
Answered by
12
The correct answer could be - A Oxidation and a Reduction reaction.
The probable equation for the reaction to allow this kind of conversion is -
K₂Cr₂O₇ + H₂SO₄ + 3SO₂ → K₂SO₄ + Cr₂(SO₄)₃ + H₂O
In this reaction, the reduction of Cr₂O₇⁻ Cr³⁺ takes place.
Reduction reaction - Cr₂O₇⁻ + 14H⁺ + 6e⁻ → Cr³⁺ + 7H₂O
The oxidation reaction involves the conversion of SO₂ to SO₄²⁻.
Oxidation reaction - 3SO₂ + 6H₂O → 3SO₄²⁻ + 12H⁺ + 6e⁻.
The probable equation for the reaction to allow this kind of conversion is -
K₂Cr₂O₇ + H₂SO₄ + 3SO₂ → K₂SO₄ + Cr₂(SO₄)₃ + H₂O
In this reaction, the reduction of Cr₂O₇⁻ Cr³⁺ takes place.
Reduction reaction - Cr₂O₇⁻ + 14H⁺ + 6e⁻ → Cr³⁺ + 7H₂O
The oxidation reaction involves the conversion of SO₂ to SO₄²⁻.
Oxidation reaction - 3SO₂ + 6H₂O → 3SO₄²⁻ + 12H⁺ + 6e⁻.
Answered by
9
Answer:
Explanation:
In K2 Cr2O7 the o.s. of Cr is +6 i.e.
2(1)+2x+7(-2)=0
x = +6
In case of Cr2( SO4)3 the o.s. of Cr is +3 i.e.
2x+3(-2)=0. ( so4^2-)
x = +3
Since there is gain of electrons hence we can say that the given process is reduction reaction .
Similar questions