Which reaction will shift to the right in response to a decrease in volume? a) n2 (g) + 3h2 (g) 2nh3 (g)b) h2 (g) + cl2 (g) 2 hcl (g)c) 2 so3 (g) 2 so2 (g) + o2 (g)d) 2hi (g) h2 (g) + i2 (g) e.2 fe2o3 (s) 4 fe (s) + 3o2 (g)?

The answer is a) N2 (g) + 3H2 (g) = 2NH3 (g) because the number of moles of gas on the right-hand side is less than the number of moles of gas on the left-hand side. When the volume is decreased, the equilibrium would shift to the side with fewer moles of gas.

Ithink is d. physical property

The answer is !