Le Châtelier's Principle

1. Comment on the following statement: “Nothing is happening once the solution reaches equilibrium.” Explain why this statement is considered to be incorrect. 2. In order to decide what effect a change in total pressure will have on an equilibrium system with gases, what is the first thing you should do when given the balanced equation? Calculate the total number of reactants and products for chemical substances in the liquid and solid phases Calculate the total number of reactants and products for chemical substances in the gaseous state ONLY Determine whether the reaction is endothermic or exothermic Calculate the Delta H value for the given chemical reaction Refer to the following reaction for questions 3-5. 2 SO2 (g) + O2 (g) ⇆ 2 SO3 (g)+ energy 3. Which way does the reaction proceed if you remove sulfur trioxide as it is formed? proceeds backwards to the reactants proceeds forward to the products does not affect equilibrium 4. Which way does the reaction proceed if you increase the pressure? proceeds backwards to the reactants proceeds forward to the products does not affect equilibrium 5. Which way does the reaction proceed if you increase the temperature? proceeds backwards to the reactants proceeds forward to the products does not affect equilibrium 6. Complete the table using the reaction:H2 (g) + I2 (g) + Heat⇆ 2 HI (g) ΔH = +218 kJ Complete the following charts by writing right (r), left (l), or none (n for equilibrium shift, and decreases (d), increases (i), or remains the same (s) for the concentrations of reactants and products.The first one is done for you. Stress Equilibrium Shift [H2] [I2] [HI] Add I2 r d n i Add HI l i i n Remove H2 l n i d Increase Temperature r d d i Increase Pressure n s s s 7. Complete the table using the reaction:2NO(g) + H2 (g) ↔ N2O (g)+ H2O (g) + HeatΔH = -36 kJ Complete the following charts by writing right (r), left (l), or none (n for equilibrium shift, and decreases (d), increases (i), or remains the same (s) for the concentrations of reactants and products.The first one is done for you. Stress Equilibrium Shift [NO] [H2] [N2O] [H2O] Add H2 r d n i i Add H2O l i i d n Remove H2 l i n d d Increase Temperature l i i d d Decrease Pressure l i i d d