Question

Among the following, in how many cases equilibrium $CaC{O}_3\left(s\right)\rightleftharpoons CaO\left(s\right)+C{O}_2\left(g\right)$ will shift in forward direction?
(i) addition of $CaC{O}_3$(s)
(ii) addition of $CaO\left(s\right)$
(iii) addition of $C{O}_2$(g)
(iv) addition of $N_2$ at constant volume
(v) addition of $N_2$ at constant pressure
(vi) increase in temperature
(vii) increase in pressure
(vii) addition of $HCl$
(ix) addition of $NaOH$

Answer 1

According to the lechatlier principle

If the concentration of reactants increased the product formation is favored that is forward reaction.

If the pressure is increased the the reaction favors in that direction where the volume is decreased.

For endothermic reaction reaction favors forward direction when the temperature is increased.

According to the above principles only in the case of (i) and (Vi) equilibrium shifts in forward direction.