Coordination Compounds (Part-2)

What is Coordination Compound? How many marks carried by the chapter Coordination Compounds in class 12 board examinations? Why we study the chapter Coordination Compounds? How important the chapter Coordination Compounds is? What are the difference between double salts and coordination compounds?

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Coordination compounds are of great importance. You can find the presence of coordination compounds in the mineral, plant and animal worlds. They play many important functional roles in the area of analytical chemistry, metallurgy, biological systems, industry and medicine. Coordination compounds find use in many qualitative and quantitative chemical analyses. Hardness of water is estimated by simple titration with Na2EDTA.The Ca2+ and Mg2+ ions form stable complexes with EDTA. Some important extraction processes of metals, like those of silver and gold, make use of complex formation. Gold, for example, combines with cyanide in the presence of oxygen and water to form the coordination entity [Au(CN)2]– in aqueous solution.