Question

EQUILIBRIUM
Two moles of compound P were placed in a vessel. The vessel was heated and compound P was partially decomposed to produce Q and R. A dynamic equilibrium between chemicals P,Q and R was established.

At equilibrium x moles of R were present and the total number of moles present was (2+x/2).
What is the equation for this equilibrium reaction?
A) P <-> 2Q+R
B) 2P <-> 2Q+R
C) 2P <-> Q+R
D) 2P <-> Q+2R