Homework Answers
a) closed system : in which there is no exchange of mass but there may be energy change.
b) at this condition , there is no change in ratio of concentration of reactants to products
c) at this condition the rate of forward reaction is equal
to backward reaction .
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The equilibrium constant for a reaction involving only A, B. C and D Is given byA...
Figure MODEL 1: Dynamic Equilibrium 4 students/min Classroom 123 18 students Classroom 124 35 students 4...
Figure MODEL 1: Dynamic Equilibrium 4 students/min Classroom 123 18 students Classroom 124 35 students 4 students/min KEY QUESTIONS L. Are the students moving from room to room in the modelt? 2. Is the number of students in each room changing 3. In the same way that equilibrium is reached for the students in the above classrooms, chemical equilibrium is reached in reactions when (select one): a) all reactions stop b) the forward reaction stops c) the concentrations of products...
The reversible chemical reaction A+B⇌C+D has the following equilibrium constant: Kc=[C][D][A][B]=2.0 Part A Initially, only A...
The reversible chemical reaction A+B⇌C+D has the following equilibrium constant: Kc=[C][D][A][B]=2.0 Part A Initially, only A and B are present, each at 2.00 M. What is the final concentration of A once equilibrium is reached? Express the molar concentration numerically using two significant figures. Part B What is the final concentration of D at equilibrium if the initial concentrations are [A] = 1.00 M and [B] = 2.00 M ? Express the molar concentration numerically using two significant figures.
5. At 700 K, the reaction 2solg) + O2(g) 늑 2solg) has the equilibrium constant ....
5. At 700 K, the reaction 2solg) + O2(g) 늑 2solg) has the equilibrium constant . 4.3 106 , and the following concentrations are present: [SO2)-0.10 M: [soi-10. M: [01-0.10 M. Is the mixture at equilibrium? If not at equilibrium, in which direction (as the equation is written), left to right or right to left, will the reaction proceed to reach equilibrium? Show how you arrive at your answe below. No work no credit. A. Yes, the mixture is at...
The reversible chemical reaction A + B C + D has the following equilibrium constant: K_c...
The reversible chemical reaction A + B C + D has the following equilibrium constant: K_c = [C][D]/[A][B] = 4.6 Initially, only A and B are present, each at 2.00 M. What is the final concentration of A once equilibrium is reached? Express your answer to two significant figures and include the appropriate units. What is the final concentration of D at equilibrium if the initial concentrations are [A] = 1.00 M and [B] = 2.00 M ? Express your...
The equilibrium constant, K. for the following reaction is 1.80X10-2 at 698 K: 2HI(g) P H2(g)...
The equilibrium constant, K. for the following reaction is 1.80X10-2 at 698 K: 2HI(g) P H2(g) +1,2) Calculate the equilibrium partial pressures of all species when HI(g) is introduced into an evacuated flask at a pressure of 1.83 atm at 698 K PH The equilibrium constant, K, for the following reaction is 1.04x10-2 at 548 K: NHCI() NH3(g) + HCl(g) Calculate the equilibrium partial pressure of HCl when 0.579 moles of NH CI(s) is introduced into a 1.00 L vessel...
A+B=C+D equilibrium constant can be expressed as a ratio of the concentrations: KOD AB his is...
A+B=C+D equilibrium constant can be expressed as a ratio of the concentrations: KOD AB his is an elementary chemical reaction, then there is a single forward rate and a single reverse rate for this reaction, which can be written as follows: forward rate = kr[A][B] reverse rate = k CD ere kr and ky are the forward and reverse rate constants, respectively. When equilibriums reached, the forward and reverse rates are equal ky[A] B-k CD us, the rate constants are...
1. Which of the following is true for a chemical reaction at equilibrium? only the forward...
1. Which of the following is true for a chemical reaction at equilibrium? only the forward reaction stops only the reverse reaction stops both the forward and reverse reactions stop the rate constants for the forward and reverse reactions are equal the rates of the forward and reverse reactions are equal 2. A chemical equilibrium may be established by starting a reaction with reactants only. d. any quantities of reactants and products. products only. e. all the above equal quantities...
Consider the reaction: A+B=C+D K= [C][D]/[A][B] Assume that in the equilibrium constant is 2.0 x 10^16....
Consider the reaction: A+B=C+D K= [C][D]/[A][B] Assume that in the equilibrium constant is 2.0 x 10^16. Calculate the equilibrium concentration of A if we start with 0.20 mol A and 0.50 mol in B in 1.00L. Calculate the equilibrium concentration of D if we start with 0.20 mol A and 0.50 mol in B in 1.00L
The equilibrium constant for a given reaction a. always increases with temperature. b. increases with temperature...
The equilibrium constant for a given reaction a. always increases with temperature. b. increases with temperature for endothermic reactions only. c. increases with temperature for exothermic reactions only. d. does not change with temperature. e. always decreases with temperature.
1) At equilibrium, \) the rate constants of the forward and reverse reactions are equal B)...
1) At equilibrium, \) the rate constants of the forward and reverse reactions are equal B) all chemical reactions have ceased C) the rates of the forward and reverse reactions are equal D) the value of the equilibrium constant is 1 B) the limiting reagent has been consumed
Figure MODEL 1: Dynamic Equilibrium 4 students/min Classroom 123 18 students Classroom 124 35 students 4 students/min KEY QUESTIONS L. Are the students moving from room to room in the modelt? 2. Is the number of students in each room changing 3. In the same way that equilibrium is reached for the students in the above classrooms, chemical equilibrium is reached in reactions when (select one): a) all reactions stop b) the forward reaction stops c) the concentrations of products...
5. At 700 K, the reaction 2solg) + O2(g) 늑 2solg) has the equilibrium constant . 4.3 106 , and the following concentrations are present: [SO2)-0.10 M: [soi-10. M: [01-0.10 M. Is the mixture at equilibrium? If not at equilibrium, in which direction (as the equation is written), left to right or right to left, will the reaction proceed to reach equilibrium? Show how you arrive at your answe below. No work no credit. A. Yes, the mixture is at...
The reversible chemical reaction A + B C + D has the following equilibrium constant: K_c = [C][D]/[A][B] = 4.6 Initially, only A and B are present, each at 2.00 M. What is the final concentration of A once equilibrium is reached? Express your answer to two significant figures and include the appropriate units. What is the final concentration of D at equilibrium if the initial concentrations are [A] = 1.00 M and [B] = 2.00 M ? Express your...
The equilibrium constant, K. for the following reaction is 1.80X10-2 at 698 K: 2HI(g) P H2(g) +1,2) Calculate the equilibrium partial pressures of all species when HI(g) is introduced into an evacuated flask at a pressure of 1.83 atm at 698 K PH The equilibrium constant, K, for the following reaction is 1.04x10-2 at 548 K: NHCI() NH3(g) + HCl(g) Calculate the equilibrium partial pressure of HCl when 0.579 moles of NH CI(s) is introduced into a 1.00 L vessel...
A+B=C+D equilibrium constant can be expressed as a ratio of the concentrations: KOD AB his is an elementary chemical reaction, then there is a single forward rate and a single reverse rate for this reaction, which can be written as follows: forward rate = kr[A][B] reverse rate = k CD ere kr and ky are the forward and reverse rate constants, respectively. When equilibriums reached, the forward and reverse rates are equal ky[A] B-k CD us, the rate constants are...
1. Which of the following is true for a chemical reaction at equilibrium? only the forward reaction stops only the reverse reaction stops both the forward and reverse reactions stop the rate constants for the forward and reverse reactions are equal the rates of the forward and reverse reactions are equal 2. A chemical equilibrium may be established by starting a reaction with reactants only. d. any quantities of reactants and products. products only. e. all the above equal quantities...
The equilibrium constant for a given reaction a. always increases with temperature. b. increases with temperature for endothermic reactions only. c. increases with temperature for exothermic reactions only. d. does not change with temperature. e. always decreases with temperature.
1) At equilibrium, \) the rate constants of the forward and reverse reactions are equal B) all chemical reactions have ceased C) the rates of the forward and reverse reactions are equal D) the value of the equilibrium constant is 1 B) the limiting reagent has been consumed
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