Question

Keq for this reaction is 3.63.
A + 2B  C

The data in the table shows the concentrations of the reactants and product in two different
reaction mixtures at the same temperature. Does the data provide evidence that both reactions
are at equilibrium?
Concentrations of A, B and C
A (mol/L) B (mol/L) C (mol/L)
0.500 0.621 0.700
0.250 0.525 0.250

a.) No, the data give different Keq values
b.) No, the concentration of C is lower than B in the second mixture
c.) Yes the Keq remains constant
d.) Yes, there is always produ

Answer 1

We are given an chemical reaction with the accompanied equilibrium constant. Keq is equal to the concentration of the products raised to their respective stoich coeff over the conc. of reactants raised to their respective stoich coeff. In this case, keq = C / A* B2. Subsituting the data points to this equation, it agrees that keq is really 3.63. Answer is c.) Yes the Keq remains constant