write a chemical equation to justify that some chemical reactions are determined by change of colour
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Pb(NO3)2+KI=PbI2+KNO3
PbI2-yellow colour
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The required chemical equation .....
2Agcl (s) ------------> 2Ag(s) +cl2(g)
silver chloride silver metal
( white) ( grey)
when a pinch of silver chloride is kept in a China dish and placed in sunlight for sometimes the white silver chloride turns grey in sunlight .this is due to deposition of silver chloride into silver and chlorine by light .This a chemical change determined by colour
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