Topic: Colour Change in Oxidation Reaction
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Answers to Common Questions
Why does zinc oxide change colour on heating?
its electrons in its outer shells become excited and rise to higher energy levels then as the electrons reach their highest point they fall back to their original energy level this releases photons which we see as light, depending on how hi... Read More »
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What is the change in the oxidation number of Sn in the reaction ...
-2 Read More »
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What is the change in the oxidation number of Cr in the reaction ...
+3 Read More »
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+1
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Copper oxide is black and when reacted with Hydrogen is REDUCED to elemental copper which is "copper" colored or red-brown
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why redox reactions chnage colour Take for example TiO2 ,the common white pigment found in paint, in this the titanium is in oxidation state 4+ and has no electrons in its d orbitals. When it is reduced to 3+ by the addition of an electron...
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Sn(OH)3- + Bi(OH)3 + OH- → Sn(OH)62- + Bi = -3 2FeCl2 + SnCl4 → SnCl2 + 2FeCl3 +1 3Cu + 2NO3- + 8H+ → 2NO + 4H2O + 3Cu2+ -3 4Zn + NO3- + 6H2O + 7OH- -> 4Zn(OH)42- + NH3 -8
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it turns a nice shade of gross
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It bleaches and becomes clear
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2+
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