Consider a reaction vessel at equilibrium where gaseous oxygen and fluorine are reacting to generate liquid oxygen difluoride. The enthalpy of formation of oxygen difluoride is positive. Which of the following pertubations would increase the yield of oxygen difluoride?

W) Increasing the volume of the reaction vessel

X) Increasing the temperature of the reaction vessel

Y) Increasing the pressure of the reaction vessel by adding helium gas

Z) Removing oxygen gas from the reaction vessel
X) Increasing the temperature of the reaction vessel