Register to reply

Enthalpy Of reaction

by kevinnn
Tags: enthalpy, reaction
Share this thread:
Feb19-14, 11:56 PM
P: 115
Im going to try my best to write out this chemical equation. Also I'm gonna write a forward arrow but it's really it should be the equilibrium arrows.

[Co(H2O)6]2+ + 4Cl- --> [CoCl4]2- + 6H2O

Sorry for that, I don't know how to use the math font or whatever it's called.

The question is whether the reaction is exothermic or endothermic. I think reaction is endothermic. Cobalt chloride is a red color and when we heated a solution of it in the presence of hydrochloric acid it turned a dark blue color. A possible solution I thought of as to why it's endothermic is because energy is required to break the attractions between the cobalt ion and the water molecules. I believe that is called a metal ion complex, correct? I'm very unconfident about this answer. Can I please get some feed back? Thanks.
Phys.Org News Partner Chemistry news on
Chemical biologists find new halogenation enzyme
Protein secrets of Ebola virus
Protein courtship revealed through chemist's lens

Register to reply

Related Discussions
Determine the enthalpy of formation to find the enthalpy of reaction Introductory Physics Homework 15
Enthalpy of reaction Classical Physics 6
Enthalpy of reaction Biology, Chemistry & Other Homework 4
Enthalpy of Reaction Biology, Chemistry & Other Homework 1
Reaction of Mg with acids (molat enthalpy and rate of reaction) Biology, Chemistry & Other Homework 1