Ignore my writing but #2 and #3 Is the following reaction exothermic or endother
ID: 538363 • Letter: I
Question
Ignore my writing but #2 and #3 Is the following reaction exothermic or endothermic? Explain. Fe^3 + (aq) + SCN^(aq) doubleheadarrow FeSCN^2 + (aq) The complex ion Co(H_2O)_6^+ 2 (aq) is pink when placed in solution. Addition of chloride ions creates an equilibrium with CoCl_4^2 - in the solution, which is blue in color. a. Write the balanced reaction for the equilibrium. If CoCl_4^2 - solubility is endothermic, predict what will happen to the solution color if the solution is heated. b. What will happen if the solution is cooled?Explanation / Answer
Q2.
This must be exothermic, since FeSCN+2 is produced when we add cold water, that is, favour products
Q3.
a)
the equation
Co(H2O)6+2 + Cl- = CoCl4-2
the balance
Co(H2O)6+2(aq) + 4 Cl-(aq) <--> CoCl4-2(aq) + 6 H2O(g)
then
if we add heat to the solution, the expected formation is MORE CoCl4-2, sinc eit is endothermic, meaning it reuqires ehat to form products
b)
if we cool this, then more reagents will be formed, i.e.
Co(H2O)6+2(aq) + 4 Cl-(aq)