The equilibrium-constant expression for a reaction written in one direction is the of the one for the reaction written for the reverse direction.

Explanation:

The equilibrium constant for an equilibrium reaction is the ratio of the equilibrium constant for the forward reaction, Kf, to the equilibrium constant for the reverse reaction, Kr:

When you write the reaction in the other reaction, the forward and the reverse reaction are exchanged:

As you see:

Thus, the equilibrium-constant expression for a reaction written in one direction is the    reciprocal___ of the one for the reaction written for the reverse direction.

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.