Question

In: Chemistry

2 NO(g) + Cl2(g) --> 2 NOCl (g) Two proposed mechanisms for the reaction are given...

2 NO(g) + Cl2(g) --> 2 NOCl (g)

Two proposed mechanisms for the reaction are given below. Which is the better mechanism? Explain both why the better mechanism is better and why the worse mechanism is worse.

       Mechanism 1                                                        Mechanism 2

                           NO + Cl2 --> NOCl + Cl                                       Cl2 --> Cl + Cl

                           NO + Cl --> NOCl NO + Cl --> NOCl

NO + Cl2 --> NOCl + Cl

For the correct mechanism, identify:

a. the rate-limiting step

b. any intermediates

c. any catalysts

Solutions

Expert Solution

       Mechanism 1                                                     

                           NO + Cl2 --> NOCl + Cl      SLow step    slow step is rate determining step                          

                         NO + Cl --> NOCl          fast step

             --------------------------------------------------------------------------------

                                      2 NO(g) + Cl2(g) --> 2 NOCl (g)    over all reaction

NO + Cl2 --> NOCl + Cl      SLow step    slow step is rate determining step    of rate limiting step

b. any intermediates   . Cl is intermediate

c. no catalyst


Related Solutions

  2 NO(g) + Cl2(g) ⇄ 2 NOCl(g)    Kp = 1.40 × 10^8 A reaction vessel initially...
  2 NO(g) + Cl2(g) ⇄ 2 NOCl(g)    Kp = 1.40 × 10^8 A reaction vessel initially contains 3.0 atm of NO and 2.0 atm of Cl2. What is the pressure of Cl2(g) when equilibrium is reached?
  2 NO(g) + Cl2(g) ⇄ 2 NOCl(g)    Kp = 1.40 × 10^8 A reaction vessel initially...
  2 NO(g) + Cl2(g) ⇄ 2 NOCl(g)    Kp = 1.40 × 10^8 A reaction vessel initially contains 3.0 atm of NO and 2.0 atm of Cl2. What is the pressure of Cl2(g) when equilibrium is reached?
2 NOCl(g) <=> 2 NO(g) + Cl2(g), K= 1.6E-5. Calculate the concentrations when: a). 6.0 mol...
2 NOCl(g) <=> 2 NO(g) + Cl2(g), K= 1.6E-5. Calculate the concentrations when: a). 6.0 mol of NO and 2.0 mol of Cl2 in a 1.2-L flask b).  2.2 mol of NOCl, 2.2 mol of NO, and 1.1 mol of Cl2 in a 1.0-L flask c).  1.01 mol/L concentration of all three gases Please show work and don't just solve the top problem. I need all three and I don't know how to correctly solve either of them!!
The reaction 2NO(g) + Cl2(g) --> 2NOCl(g) obeys the rate law rate = k [NO]2 [Cl2]....
The reaction 2NO(g) + Cl2(g) --> 2NOCl(g) obeys the rate law rate = k [NO]2 [Cl2]. The following mechanism is proposed: NO (g) + Cl2 (g) --> NOCl2(g) NOCl2(g) + NO (g) -->2NOCl (g) a) What would the rate law be if the first step was rate determining? b) Based on the observed rate law, what can be concluded about the relative rates of the 2 reactions?
The gas phase decomposition of nitrosyl chloride at 400 K NOCl(g)NO(g) + ½ Cl2(g) is second...
The gas phase decomposition of nitrosyl chloride at 400 K NOCl(g)NO(g) + ½ Cl2(g) is second order in NOCl with a rate constant of 5.90×10-4 M-1 s-1. If the initial concentration of NOCl is 8.78×10-2 M, the concentration of NOCl will be 9.48×10-3 M after seconds have passed.
The gas phase decomposition of nitrosyl chloride at 400 K NOCl(g)NO(g) + ½ Cl2(g) is second...
The gas phase decomposition of nitrosyl chloride at 400 K NOCl(g)NO(g) + ½ Cl2(g) is second order in NOCl with a rate constant of 5.90×10-4 M-1 s-1. If the initial concentration of NOCl is 3.75×10-2 M, the concentration of NOCl will be 1.05×10-2 M after seconds have passed.
Q1) part A: Consider the decomposition of NOCl: 2NOCl(g) → 2NO(g) + Cl2(g) During the decomposition,...
Q1) part A: Consider the decomposition of NOCl: 2NOCl(g) → 2NO(g) + Cl2(g) During the decomposition, the concentration of cyclopropane is measured. By graphing [NOCl] vs. time, ln[NOCl] vs. time and 1/[NOCl] vs. time, the plot of 1/[NOCl] vs. time gives a straight line with a slope of 9.98 x 10-2 at 129oC. (a) What is the reaction order for the decomposition of NOCl. (b) Calculate the rate constant of the reaction. (c) If the initial concentration of NOCl(g) is...
The gas phase decomposition of nitrosyl chloride at 400 K NOCl(g)NO(g) + ½ Cl2(g) is second...
The gas phase decomposition of nitrosyl chloride at 400 K NOCl(g)NO(g) + ½ Cl2(g) is second order in NOCl with a rate constant of 5.90×10-4 M-1 s-1. If the initial concentration of NOCl is 3.85×10-2 M, the concentration of NOCl will be 8.43×10-3 M after seconds have passed.
The equilibrium constant K=0.36 for the reaction PCl5 (g)  PCl3 (g) +Cl2 (g). (a) Given...
The equilibrium constant K=0.36 for the reaction PCl5 (g)  PCl3 (g) +Cl2 (g). (a) Given that 2.0 g of PCl5 was initially placed in the reaction chamber of volume 250 cm3, determine the molar concentration in the mixture at equilibrium. (b) What is the percentage of PCl5 decomposed.
Consider the reaction: I2(g) + Cl2(g) ↔ 2 ICl (g) Calculate ΔGrxnfor the reaction at 25oC...
Consider the reaction: I2(g) + Cl2(g) ↔ 2 ICl (g) Calculate ΔGrxnfor the reaction at 25oC under each of the following conditions: a. Standard conditions b. At equilibrium c. PICl= 2.55 atm; PI2= 0.325 atm; PCl2= 0.221 atm
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT