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Ksp (Calculation (Normal (Write balanced ionic equation, Let S be the…

- - - - Exothermic reaction
        
        Solubility decreases(increases)
      - Endothermic reaction
        
        Solubility increases(decreases)
    - - Solubility decreases
        
        Explanation
        
        That solution provides extra X+ or X- , the final solution has higher [ ] than origin
        
        According to Le Chatelier’s principle, position of equilibrium….to reduce common ion effect
        
        As a result, more precipitate of ( ) formed
        
        Thus, the solubility of ( ) decreases in the presence of common ion, X+ or ¬X-
    - - Solubility increases
        
        Explanation
        
        The X+ ion is removed from the equilibrium mixture to form complex ion
        
        The concentration of X+ ion is reduced
        
        Position of equilibrium moves to right to reduce the effect
        
        So, precipicate of ( ) dissolve