Termolecular elementary steps are rare why be brief

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4.(10)Termolecular elementary steps are rare. Why (Be brief and clear)?
2 EXAM 1 - Karlin page 2 of 4 (+ EChem-Table) Chem 030.102.02, Feb. 24, ’12 NAME_____________________5.(10)Nitric oxide is produced in the body by different enzymes and acts as a signal that controls blood pressure, long-term memory and other critical functions. One route for removing excess NO is via reaction with O2to give NO2, which then reacts rapidly with water to give nitrous acid and nitric acid: Reactions such as this are important in maintaining steady biological levels of NO. The following table lists kinetics data for the reaction of NO with O2at 25 °C. Determine the rate law for the reaction and calculate the rate constant at 25 °C. Experiment [NO](M) [O2]0(M) Initial Rate (M s–1) 1 0.0235 0.0125 7.98×102 0.0235 0.0250 1.59×103 0.0470 0.0125 3.20×104 0.0470 0.0250 6.35×10Rate Law: _______________________Rate constant: _______________________0 –3–2–2–2
]
s–1

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