Equilibrium Constant Definition of Kc Chemical Equilibrium Lecture 2
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In this class, we will study the chemical equilibrium constant Kc. The equilibrium constant is the ratio between the concentration of the products and the concentration of the reactants raised to the stoichiometric coefficients of the balanced equilibrium reaction. It is important to note that solids do not participate in the expression of the chemical equilibrium constant. In this class, we will also see what happens to the expression of the Kc constant when we manipulate a chemical equation, that is, when we invert reactants with products, when we multiply or divide an equation by a certain factor, and how we can calculate the expression of the Kc constant for a global reaction starting from the intermediate steps. To do this, we will use a question from the 2015 Enem as an example: (Enem 2015) Several acids are used in industries that discharge their effluents into bodies of water, such as rivers and lakes, and can affect the environmental balance. To neutralize the acidity, calcium carbonate salt can be added to the effluent in appropriate quantities, as it produces bicarbonate, which neutralizes the water. The equations involved in the process are presented: Based on the values of the equilibrium constants of reactions II, III and IV at 25°C, what is the numerical value of the equilibrium constant of reaction I? ???? SUBSCRIBE TO THE CHANNEL ???? Did you like the video? Leave your LIKE! Follow me on social media too: ✏️Instagram: / prof_igor_quimica ✏️Twitter: / igorsuga ✏️Blog: https://igorsuga.wordpress.com/ #chemistry #equilibrium #Kc #igorchemistry #enem #entranceexam #entranceexam #igorchemistryequilibrium #equilibriumchemistry #equilibriumconstant #questionsolving
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