12 Questions
Who was the first chemist to formulate ideas about the structures of coordination compounds?
Alfred Werner
What did Alfred Werner propose in relation to metal ions in coordination compounds?
Both primary and secondary valence
How many primary valences do CoCl2 and PdCl2 have according to Alfred Werner?
CoCl2 - 3, PdCl2 - 2
In Werner's experiments with cobalt(III) chloride and ammonia, what was observed when excess silver nitrate was added?
Some chloride ions precipitated as AgCl while some remained in solution
How many moles of silver chloride (AgCl) are formed when reacting 1 mol of CoCl3.6NH3 (Yellow) according to the observations by Alfred Werner?
3 mol AgCl
Based on Werner's theory, how many groups remain bonded to the cobalt ion during the reaction in coordination compounds?
Six groups
According to Werner's theory of coordination compounds, what is the primary valence satisfied by?
Negative ions
What term is used for compounds like [CoCl3.4NH3] which have the same empirical formula but different properties?
Isomers
What is the secondary valence in coordination compounds according to Werner's theory?
Non-ionisable
In the context of coordination compounds, what are coordination polyhedra?
Spatial arrangements around the metal ion
Which geometrical shapes did Werner postulate as more common in coordination compounds of transition metals?
Octahedral, tetrahedral, square planar
How do double salts differ from complex ions in terms of dissociation in water?
Double salts dissociate into simple ions, but complex ions do not dissociate
Learn about the contributions of Alfred Werner in the field of coordination chemistry, including his concepts of primary and secondary valence. Explore the structures and properties of coordination compounds through simple experimental techniques.
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