At a certain temperature, the equilibrium constant, kc, for this reaction is 53.3. h2(g)+i2(g)â½âââ2hi(g)kc=53.3 at this temperature, 0.700 mol of h2 and 0.700 mol of i2 were placed in a 1.00-l container to react. what concentration of hi is present at equilibrium?

5.11 mol/L.

Explanation:

For the reaction:

H₂(g) + I₂(g) ⇄ 2HI(g), Kc = 53.3.

∵ Kc = [HI]²/[H₂][I₂]

[H₂] = 0.70 mol/1.0 L = 0.70 mol/L.

[I₂] = 0.70 mol/1.0 L = 0.70 mol/L.

∵ Kc = [HI]²/[H₂][I₂]

∴ [HI]² = Kc[H₂][I₂] = (53.3)(0.70)(0.70) = 26.117.

∴ [HI] = √26.117 = 5.11 mol/L.

Atomicity occurs to prevent updates of the database occurring only partially, which can cause greater problems than rejecting the whole series outright.some are monatomic, diatomic, triatomic etc because it shows the number of atoms. for example, monatomic means it contains only one atom.