Question

Say you have a cobalt chloride alcohol volume ratio that gives a Kc > 1 at room temperature, but Kc < 1 at freezing temperatures (ice bath).

Option 1:
The reaction is exothermic.

Option 2:
The reaction is endothermic.

Option 3:
The reaction is reversible.

Option 4:
The reaction is independent of temperature.

Answer 1

The reaction is endothermic.

Step-by-step explanation:

The fact that the equilibrium constant (Kc) is greater than 1 at room temperature and less than 1 at freezing temperatures (ice bath) indicates that the reaction is endothermic. An endothermic reaction absorbs heat from its surroundings, causing Kc to be higher at higher temperatures. As the temperature decreases, the reaction shifts in the reverse direction to try to generate more heat, resulting in a lower value of Kc.