Question

Select the heterogenous equilibrium from the following reactions :

• A. $CaC{O}_3\left(s\right)\leftrightharpoons CaO\left(s\right)+C{O}_2\left(g\right)$
• B. $H_2\left(g\right)+I_2\left(g\right)\leftrightharpoons 2HI\left(g\right)$
• C. Both of these
• D. None of these

Answer 1

The correct option is A $CaC{O}_3\left(s\right)\leftrightharpoons CaO\left(s\right)+C{O}_2\left(g\right)$

The equilibrium is said to be heterogeneous if the reactants and product is in a different phase.

$CaC{O}_3\left(s\right)\rightleftarrows CaO\left(s\right)+C{O}_2\left(g\right)$

From the above reaction, it is clear that $C{O}_2$ is gas while the remaining two are solid. Thus, the equilibrium is said to be heterogeneous.

Thus, option (A) is correct.