Answer:
See explanation
Step-by-step explanation:
The reaction equation is;
Cl2(g) + 3 F2(g) ------>2 ClF3(g)
If the volume of the flask containing the reactants in this exothermic reaction is decreased, the equilibrium position will shift towards the right hand side.
This is because, decrease in the volume of the reaction system drives the equilibrium in the direction producing the lower total volume which in this case is the forward direction
Hence when the volume of the reaction system is decreased, more ClF3 is obtained because the equilibrium position shifts towards the right hand side.