Homework Answers
According to Le Chatelier's principle, a system at equilibrium always try to counteract the stress applied on it and by shifting its direction to products(right) or, reactants(left).
a) If equilibrium mixture is heated then the system will try to remove excess heat and that is only possible if the reaction goes forward, because, A and B requires heat to be converted to C and D. So, equilibrium will be shifted right.
b) If more A is added, then the system will try to remove excess A, that is only possible if the reaction goes forward in order to consume A. So, equilibrium will shift towards right.
c) If D is precipitated then the system will try to produce D in order to restore equilibrium, so, the reaction has to move forward. So, equilibrium will shift towards right.
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