Mn -2- PbO 2- conc- HNO 3-pink colourPink colour is due toA HMnO 4B PB NO 32C Mn NO 32D H 2 MnO 4

The pink color is due to Mn 7+ ions formed. The following is the balanced redox equation 2Mn2+ + 5PbO2 + 4H+ → 2MnO4 + 5Pb2+ + 2H2O in which the MnO4 ion ha ...

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Standard X

Chemistry

Covalent Bond vs Ionic Bond

Mn +2+ PbO 2+...

Question

Mn⁺²+PbO₂+conc. HNO₃ ----------->pink colour
Pink colour is due to
A)HMnO₄
B)PB(NO₃)₂
C)Mn(NO₃)₂
D)H2MnO4

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Solution

the pink color is due to Mn 7+ ions formed.
The following is the balanced redox equation
2Mn²⁺ + 5PbO₂ + 4H⁺ → 2MnO₄^- + 5Pb²⁺ + 2H₂O in which the MnO4- ion have the charge 7+.
x-(4*-2)=-1
x=-1+8 =+7.
increase in oxidation number from +2 to +7 shows that Mn2+gets oxidised toget the color

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Mn+2+PbO​​​​2 +conc. HNO​​​3​​​​​ ----------->pink colour Pink colour is due to A)HMnO​​​​​​​​​​4 B)PB(NO​​​​3)2 C)Mn(NO​3)2 D)H2MnO4

the pink color is due to Mn 7+ ions formed. The following is the balanced redox equation 2Mn2+ + 5PbO2 + 4H+ → 2MnO4- + 5Pb2+ + 2H2O in which the MnO4- ion have the charge 7+. x-(4*-2)=-1 x=-1+8 =+7. increase in oxidation number from +2 to +7 shows that Mn2+gets oxidised toget the color

Mn⁺²+PbO₂+conc. HNO₃ ----------->pink colour
Pink colour is due to
A)HMnO₄
B)PB(NO₃)₂
C)Mn(NO₃)₂
D)H2MnO4