Question

Write the unit of equilibrium constant (K) for the given reaction.
BaCO3(s) - Bao(s) + CO2(g)​

Answer 1

While we write equilibrium constant of the reaction, we observe that there is only one gaseous particle.

Hence K = [Pco2]

Hence, the unit of K will be atm.

Answer 2

UNIT OF EQUILIBRIUM CONSTANT = atm

• The unit  of equilibrium constant (K) for the given reaction

• BaCo3 (s)  ------> BaO (s) + Co2(g)

• when we look the above reaction it only contains Co2 as gaseous reaction

• hence $K_{c}$ will  be defined for the this reaction in terms of partial pressure.

• $K_{c} = P_{Co2}$

• WHERE

$P_{Co2}$ = PARTIAL PRESSURE OF Co2

hence unit will be atm