Nitrosyl chloride, formation from nitric

The conditions under which HC1 formed in acidified sodium chloride droplets would be expected to enter the gas phase have been treated by Clegg and Brimble-combe (1990). Cadle and co-workers (Robbins et al., 1959 Cadle and Robbins, 1960) observed that NaCl aerosols in the presence of 0.1-100 ppm NOz at relative humidities of 50-100% lost chloride ion from the particles. They ascribed this to the formation of nitric acid from NOz, followed by reaction (1). Schroeder and Urone (1974) subsequently suggested that NOz could react directly with NaCl to produce gaseous nitrosyl chloride, C1NO, which they observed using infrared spectroscopy stoichiometrically, this is represented as... 

The equilibrium constant for the formation of nitrosyl chloride, an orange-yellow compound, from nitric oxide and molecular chlorine... 

The formation of nitrosyl chloride from nitric oxide, 2N0(g)-l-02(g) 2N0CI(g)... 

Practice Problem B Calculate Kp for the formation of nitrosyl chloride from nitric oxide and chlorine at 35°C, and determine whether the reaction will proceed to the right or the left to achieve equilibrium when the starting pressures are = 1-01 atm. Pq = 0.42 atm. and Pnoci = 1-76 atm. 

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