6. The uncoiling of deoxyribonucleic acid (DNA) is a first order reaction with an activation energy of 420. kJ/mol. If the rate constant is 2.94 x 10-25-1 at 37°C, what is the rate constant when the temperature is decreased to 25°C?
12. The first-order rate constant for the reaction of methyl chloride (CH3Cl) with water to produce methanol (CH3OH) and hydrochloric acid (HCl) is 3.32 × 10−10 s−1 at 25°C. Calculate the rate constant at 52.1°C if the activation energy is 116 kJ/mol. _____ ×10^____ s−1 (Enter your answer in scientific notation.) 14. The rate constant of a first-order reaction is 2.75 × 10−4 s−1 at 350.°C. If the activation energy is 101 kJ/mol, calculate the temperature at which its rate constant...
DV 18. For the formation of 1 mol of nitrosyl chloride at a given temperature, AH -36 kJ. NO(g) + Cl2(g) → NOCI(8) The activation energy for this reaction is 84 kJ/mol. What is the activation energy for the reverse reaction? A) -36 kJ/mol B) 48 kJ/mol C) 84 kJ/mol D) 120 kJ/mol E) -120 kJ/mol 19. The rate constant for a first-order reaction is 1.8 x 10° s at 736 K and 4.0 x 10s at 836 K. What...
in the vessel? 16.56 For the reaction A(g)+ B(g) AB(g), how collisions between A and B are possible if 1.01 mol of A(g) and 2.12 mol of B(g) are present in the vessel? many unique 16.57 At 25°C, what is the fraction of collisions with energy equal to or greater than an activation energy of 100. kJ/mol? 16.58 If the temperature in Problem 16.57 is increased to 50.°C by what factor does the fraction of collisions with energy equal to...
3) The rate constant of a first order reaction is 2.6 x 10+ s' at 255 °C. If the activation energy is 99.9 KJ/mol, calculate the temperature at which its rate constant is 4.8 x 104 sl.
7.43 hours b) 16.5 hours c) 20.7 hours d) 34.2 hours e) 45.3 hours P21. (See. 13.4) A certain reaction has artes at 205 lata temperature of 25 .11 the activation energy (E) equals 85.6 kJ/mol what is the frequency factor (A) for the reaction (R = 8.314 J/mol K) a) 6.022 x 1023 /s b) 39.3/s 2.073 x 1017/s d) 7.453 x 106/s e) 5.128 x 1011 /s P22. (Sec. 13.4) The following reaction is a first order reaction....
Please answer questions 1 and 2 on The rate constant for the reaction answered A + B->C out of 1.0 is 4.1 x104 U(mol s) at 593 K. The activation energy is 101 kj/mol. question Determine the temperature when the rate constant is 1.2 x10-3 L/(mol s)- Answer: 2 One (often inaccurate) rule of thumb in biology is that a 10 °C change increases the rate by a factor of ten. If the lower temperature is 3 °C, what activation...
If a first-order reaction has a rate constant of 2.11 x 10-1 s-1 at a temperature of 22.3°C, what would the value of k be if the reaction temperature has changed to 43.4 °C given the activation energy is 52.9 kJ/mol?
14) The rate constant of a first-order reaction is 3.00 × 10^−4 s^−1 at 350.°C. If the activation energy is 149 kJ/mol, calculate the temperature at which its rate constant is 7.60 × 10^−4 s^−1. _____ *C
Ch.19 #4 The rate constant of a first-order reaction is 3.90 x 10-45 at 350°C. If the activation energy is 123 kJ/mol, calculate the temperature at which its rate constant is 9.65 x 10-457. °C