The compound K₃[Fe(CN)₆] is used in calico printing and wool dyeing. Give its systematic name. A) potassium iron(III) hexacyanate B) tripotassium iron(III) hexacyanate C) potassium hexacyanoferrate(III) D) potassium hexacyanideferrate E) None of these choices is correct.

Question

Quizplus · Accepted Answer

The compound includes the complex ion [Fe(CN)6]3-, which is a hexacyanoferrate(III) ion, and the cation K+ (potassium ion). Therefore, its systematic name is potassium hexacyanoferrate(III) or potassium ferrate(III) hexacyanide. Choice A (potassium iron(III) hexacyanate) and Choice D (potassium hexacyanideferrate) are incorrect because they don't correctly indicate the presence of the hexacyanoferrate(III) ion. Choice B (tripotassium iron(III) hexacyanate) is incorrect because it implies the presence of three potassium ions per formula unit, which is not the case.

The Compound K3[Fe(CN)6] Is Used in Calico Printing and Wool

The Compound K₃[Fe(CN)₆] Is Used in Calico Printing and Wool