A sample of pure NH4HS is placed in a sealed 2.0-L container and heated to 550 K at which the equilibrium constant is 3.5 x 10-3. Once the reaction reaches equilibrium, what mass of NH3 is present in the container

The mass of in the container is 2.074 gram

Explanation:

Given:

Volume of     lit

Equilibrium constant

The reaction in which is produced

  ⇄

Here equal moles of and is formed.

From the formula of equilibrium constant,

      M

Above value shows,

So in 2 L no. moles of = moles.

So mass of 0.122 mole of is = g

Therefore, the mass of in the container is 2.074 gram