The reaction 2 NO2(g) <-> N2O4(g) is at equilibrium when the container volume is suddenly decreased at the dashed line.
The plot is consistent with which response to a volume decrease?
- Acheck_circle
Shift to the side with fewer moles of gas (toward N2O4)
- B
Both species rise equally
- C
No shift, since K is constant
- D
Shift to the side with more moles of gas (toward NO2)
Explanation
Decreasing volume increases pressure; the system shifts toward fewer moles of gas. 2 mol NO2 -> 1 mol N2O4 reduces moles, so equilibrium shifts toward N2O4.