Consider the following system at equiLiBrium where H° = -198 kJ, and Kc = 34.5, at 1.15×103 K.
2SO₂(g) + O2(g) → 2SO₃(g)
If the VOLUME of the equiLiBrium system is suddenly decreased at constant temperature:

The value of Kc
The value of Qc
The reaction must:
A. run forward
B. run reverse
C. remain the same
The number of moles of O2 will ________.
1) increase
2) decrease
3) remain the same