If a reaction is initiated with 2.4 M of each substance, what is the equilibrium concentration of C? Chemical Equilibrium If a reaction is initiated with 2.4 M of each substance, what is the equilibrium concentration of C? a. 0.76 M b. 5.3 M c. 4.3 M d. 1.2 M e. 2.4 M Answer: b. 5.3 M Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+