Excess KCN(aq) is added to a solution of [Co(H2O)6]2+. Identify the complex ion formed and predict its shape and charge.
[Co(CN)6]4-CN has -1 charge so overall charge is -4. CN- is similar sized ligand to H2O so shape is unchanged and remains octahedral.
JJ
Related Chemistry A Level answers
All answers ▸How could you obtain a carboxylic acid from oxidation of an alcohol and what type of alcohol would be suitable?
What is the pH of a 25 ml sample of 0.2 M sulfuric acid? What is the pH after 5 ml of 0.25 M sodium hydroxide is added?
What is a mole?
Explain why compounds of Fe^2+ are coloured in solution. (4 marks)