Question

A(aq) + B (s) =C(aq) + D(aq) H<0

Indicate whether the concentration of reactant A will increase,decrease or remain the same .

1 If a catalyst is added
2 some C is removed from the system
3 some D is added to the system
4 the system is cooled
5 some B is added to the system

Answer 1

1.  concentration of reactant A will  remain the same  If a catalyst is added .
2.  concentration of reactant A will  A will decrease If some C is removed from the system
3.  concentration of reactant A will  A will increase If some D is added to the system
4.  concentration of reactant A will  A will decrease if  the system is cooled
5.  concentration of reactant A will   remain the same If some B is added to the system