Question

Which equation represents a chemical equilibrium?

1)N2(l)<-->N2(g)
2)2NO2(g)<--->N2O4(g)
3)CO2(s)<-->CO2(g)
4)NH3(l)<--NH3(g)

Answer 1

2

Step-by-step explanation:

the answer is number 2, 2NO2(g)<--->N2O4(g) is the same equation written twice