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Measurements of the rate constants for the reactions of He+, Ne+, Ar+, Kr+, O+, N+, and N2+ with H2O by the flowing afterglow technique at 296°K gave values of 0.56, 0.74, 1.43, 1.19, 2.33, 2.57, and 2.19 × 10−9 cm3/sec with standard deviation of 7%–15%. They are in good agreement with extrapolated beam results for Ar+, O+, N+, and N2+. Close agreement is also found for all but He+ and Ne+ with estimates based on classical trajectory calculations for similar ion plus dipole systems.
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Howard et al. (1970) studied this question.
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