Does the reaction of solid Sodium Chlorate and Hydrochloric acid generate Chlorine Dioxide?

I did this reaction on a very small scale, swirled it around to mix and react, and saw a yellow green gas come out, as Chlorine gas is one of the products. However, based on what I found online about the reaction I found it ambiguous whether or not it also produced Chlorine dioxide, as it has a similar appearance. Is it maybe dependent on the concentration of HCl, temperature, or pH? (I used 6 M HCl at around room temperature)




Sodium chlorate/hydrochloric acid mixture has been actively used as chlorinating agent and [Wikipedia did mention that it generates $\ce{HOCl}$ or $\ce{Cl2}$ depending on pH which act as active agent in the chlorination reaction](https://www.scientific.net/AMR.634-638.546), the reaction does also generate chlorine dioxide. Again, it depends on the kinetics and pH of the reaction system. Following is the abstract from the paper[[1](https://www.scientific.net/AMR.634-638.546)]:



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> **Based on the mechanism of $\ce{ClO3-/Cl-}$ reaction system, the kinetics for reaction of sodium chlorate and hydrochloric acid to generate $\ce{ClO2}$ was studied.** The rate equation of this reaction system was deduced and simplified as a formula with mixed-order (combination of first-order and second-order) towards $\ce{ClO3-}$. This rate formula indicates that the initial rate of the reaction is the first-order with respect to $\ce{ClO3-}$, and the reaction rate is the second-order with respect to $\ce{ClO3-}$ when $\ce{[ClO3-]}$ becomes close to zero. The rate constants of the first-order were determined as $\pu{0.0168s^{-1}( 30 °C)}$, $\pu{0.0221s-1( 40°C)}$, and $\pu{0.0279s-1( 50°C)}$, respectively, and that of the second-order were obtained for $\pu{0.0019Lmol-1s-1( 30°C)}$, $\pu{0.0028Lmol-1s-1( 40°C)}$, and $\pu{0.0060Lmol-1s-1( 50°C)}$, respectively. The results of statistic test prove that the rate formula obtained in this work is credible.
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**Reference**


1. Li, X.J., Jiang, D.D., Zhang, Y.J., **2013**. Kinetics of the Reaction for Generation of Chlorine Dioxide from Sodium Chlorate and Hydrochloric Acid. AMR 634–638, 546–550. DOI: [10.4028/www.scientific.net/amr.634-638.546](https://en.wikipedia.org/wiki/Sodium_chlorate)


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