Which of the following equations show that a reaction is in equilibrium?

PCl5(g) ↔ PCl3(g) + Cl2(g)
In the reaction above, a decrease in pressure will

When H\(_2\)S is passed into a solution of iron (III) chloride, the solution turns

The Arrhenius equation expresses the relationship between the speed of a reaction and its

When dissolved in water, NaOH flakes show