for decomposing the Muriatic Acid. iyj 



Exper. 13. Dry carbonated hydrogenous gas 132 measures, 

 mixed with dry muriatic gas - 108 



240 

 by 200 shocks, expanded to - 268 

 Part of this gas was then transferred to another tube, and the 

 proportion of permanent gas ascertained. Through the remain- 

 der, 150 additional shocks were passed, before the amount of 

 the gas thus evolved was determined. In both, it bore exactly 

 the same proportion to the original gas ; which shews, that by 

 continuing the electrization, no further effects were produced. 



A great variety of similar experiments convinced me, that by 

 electrifying together the carbonated hydrogenous and mu- 

 riatic gases, not the smallest progress was made towards the 

 decomposition of the latter. All that was thus effected, consisted 

 in the decomposition of the water of the two gases, by the car- 

 bon of the combustible gas; and, when this was completely 

 accomplished, no further effect ensued from continuing the 

 electrization. The generation of carbonic acid was proved, by 

 the following experiment. 



Exper. 14. To a mixture of carbonated hydrogen and mu- 

 riatic gases, after having received above 100 shocks, a drop of 

 water was admitted, which absorbed the muriatic acid. The 

 liquid was then taken up by blotting-paper ; and the residuary 

 gas, being transferred into another tube, was brought into 

 contact with a solution of pure barytic earth. The precipitation 

 of this solution, evinced the presence of carbonic acid. 



It was desirable, however, that the effects should be ascer- 

 tained, of electrifying together pure muriatic acid and pure car- 

 bonated hydrogenous gas, both perfectly free from water.. Now,, 



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