define the terms :-
1) equilibrium constant ....2) exothermic reaction .....3)heterogenous equilibrium
Kindly refer to the following links:
https://www.meritnation.com/ask-answer/question/what-is-meant-by-equilibrium-constant/thermodynamics/6736551
https://www.meritnation.com/ask-answer/question/what-is-the-difference-between-exothermic-reaction-nd-endoth/chemical-reactions-and-equations/5029764
https://www.meritnation.com/ask-answer/question/please-explain-heterogeneous-equilibrium-is-that-in-which-th/equilibrium/8560511
https://www.meritnation.com/ask-answer/question/what-is-meant-by-equilibrium-constant/thermodynamics/6736551
https://www.meritnation.com/ask-answer/question/what-is-the-difference-between-exothermic-reaction-nd-endoth/chemical-reactions-and-equations/5029764
https://www.meritnation.com/ask-answer/question/please-explain-heterogeneous-equilibrium-is-that-in-which-th/equilibrium/8560511