What kind of reaction alters the equilibrium? What is the effect of the addition of HCl to the equilibrium?

What is meant by a reaction being at equilibrium?  * useing Le Chateliers Principle

Consider the reversible reaction.   PCl5↽−−⇀PCl3+Cl2   What substances are present at equilibrium? Cl2Cl2 PCl3PCl3 PCl5PCl5 Are the concentrations of phosphorus pentachloride, PCl5,PCl5, and phosphosphorus trichloride, PCl3,PCl3, constant or changing at equilibrium? The concentrations of both PCl5PCl5 and PCl3PCl3 are changing at equilibrium. The concentrations of both PCl5PCl5 and PCl3PCl3 are constant at equilibrium. The concentration of PCl5PCl5 is constant, and the concentration of PCl3PCl3 is changing at equilibrium. The concentration of PCl5PCl5 is changing, and the concentration of PCl3PCl3 is constant at equilibrium. How does the equilibrium change if more chlorine, Cl2,Cl2, is added to the reaction? The equilibrium shifts to the left. The equilibrium shifts to the right. The equilibrium does not shift to either the left or the right. If more phosphorus pentachloride, PCl5,PCl5, is added, how does the equilibrium change? The equilibrium…

Suppose the reaction system: UO₂ (s) + 4HF (g) UF4 (g) + 2 H₂O (g) has already reached equilibrium. Predict the effect that each of the following changes will have on the direction of the reaction to reestablish equilibrium. Indicate whether the reaction will shift to the left, to the right, or no change. a. Additional HF is added to the system. b. The reaction is performed in a glass reaction container and the HF begins to react with the glass. c. Water vapor is added. d. The volume is increased.

What are the Step to be followed to determining acidity using hybridization effects ?

Which is the appropriate description to show the effect of a catalyst on the reaction rate and equilibrium in a reversible reaction: Reactants › Products O• The rate of the forward reaction is increased. • The rate of the reverse reaction is decreased 0 •The equilibrium position is displaced to the right O • The rate of the forward reaction is increased. The rate of the reverse reaction is increased The equilibrium position is unchanged. • The rate of the forward reaction is increased. 0 •The rate of the reverse reaction is unchanged • The equilibrium position is displaced to the right • The rate of the forward reaction is unchanged. The rate of the reverse reaction is unchanged The equilibrium position is unchanged. Suppose that an exothermic reaction, Reactants < › Products, is at equilibrium. According to Le Chatelier's Principle, if the reaction temperature is increased, in which direction will the equilibrium be displaced? O The equilibrium will be displaced toward the…

Consider the reaction. NaC2O2H3(s) <--- H2O ------> NaC2O2H3(aq), which is at equilibrium in an open flask in the lab at room temperature. You add more water to the equilibrium mixture. When the system reestablishes equilibrium, what has changed?  a. the concentration of NaC2H3O2(aq) does not change b. heat is produced c. the concentration of NaC2H3O2(aq) decreases d. the concentration of the water increases

1) When a system is at equilibrium: A) the reaction rate of the forward reaction is equal to the rate of the reverse B) the reaction rate of the reverse reaction is small compared to forward C) the reaction rate of the forward reaction is small compared to the reverse D) the amount of product and reactant is exactly equal 2) What will be the equilibrium expression for this reaction? (DO NOT INCLUDE SOLID PRODUCTS, THEIR CONCENTRATION IS ALWAYS EQUAL TO 1.) 4 CuO (s) + CH4 (g) = CO2 (g)+ 4 Cu (s) + 2 H2O (g) A) [CuO]/[Cu] B) [CuO]4/[Cu]4 C) [Cu]4/[CuO]4 D) [CO2][H20]2/[CH4] 3) Which K value below corresponds to the system with the highest proportion of reactants? А) К 3D25 B) K = 0.067 C) K = 1.5 x 10-3 D) K 3D 1.2 х 103

Select all of the correct statements about equilibrium from the choices below. At equilibrium the rates of forward and reverse reactions are equal.Reactants are transformed into products even at equilibrium.At equilibrium the reverse rate equals zero.At equilibrium the speed of a reaction equals its rate constant.As a reaction proceeds forward toward equilibrium the reverse rate rises.At equilibrium the rate of change of product concentration is zero.

QUESTION 4 Adding a catalyst to an equilibrium system will:     produce more products at equilibrium.     produce more reactants at equilibrium.     not change the amount of reactants or products at equilibrium.