The reactions Cu + Cl-2 --> CUCI + Cl (1), CUCI + Cl-2 --> CUCl2 + Cl (2), and Cu + N2O --> CuO + N-2 (3) have been studied using a high-temperature fast-flow reactor (HTFFR). The metallic species were the limiting reactants. Cu atoms were generated by vaporization, and CuCl, by reaction 1. Their concentrations were monitored by LIF. The following k(T) expressions in cm(3) molecule(-1) s(-1) were obtained: k(1)(305-1140 K) = 3.9 x 10(-10) exp(-355 K/T), k(2)(980-1150 K) = 3.1 x 10(-11) exp(-4765 K/T), and k(3)(530-950 K) = 3.8 x 10(-10) exp(-5441 K/T). The Arrhenius parameters of k(1) are similar to other exothermic metal atom-Cl-2 reactions. The activation energy of reaction, 2 is rather large, which is attributed to the closed-shell electron structure of CuCl. Reaction 3 had been measured earlier in a pseudostatic photochemistry reactor (Narayan, A. S.; Futerko, P. M.; Fontijn, A. J. Phys. Chem. 1992, 96, 290) and in a different type of fast-flow reactor (Vinckier, C.; Verhaeghe, T.; Vanhees, I. J. Chem. Soc., Faraday Trans. 1994, 90, 2003). A comparison of these two studies showed mild disagreement. However, a critical evaluation of the three data sets confirms the validity of our previous recommendation: k(3)(470-1340 K) = 3.04 x 10(-20)(T/K)(2.97) exp(-3087 K/T).