[Co(H_2O)_6]_((aq))^(3+) + 4Cl_((aq))^(-) hArr [CoCl_4]_((aq))^(2-) + 6H_2O this reaction is endothermic and if blue colour is due to CoCl_(4(aq))^(2-). If this mixture kept in ice than What happened when reaction vessel ofis kept in 80^@C containing water ?

[Co(H_2O)_6]_((aq))^(3+) + 4Cl_((aq))^(-) hArr [CoCl_4]_((aq))^(2-) +

1.	[Co(H_2O)_6]_((aq))^(3+) + 4Cl_((aq))^(-) hArr [CoCl_4]_((aq))^(2-) + 6H_2O this reaction is endothermic and if blue colour is due to CoCl_(4(aq))^(2-). If this mixture kept in ice than What happened when reaction vessel ofis kept in 80^@C containing water ?
Answer» Solution :Thus, temperature increase i.e., ENDOTHERMIC reaction So, reaction will be forward. The CONCENTRATION of BLUE colour product `[CoCl_4]^(2+)`is increases and blue colour BECOME dark.