Which does a better job of absorbing hydrogen chloride gas, pure water or dilute acid?
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This post was last edited by sunjl1981 on 2013-1-6 22:11. Which works better for absorbing hydrogen chloride gas: pure water or dilute acid? # + + . hcbbs
Pure water has an excellent effect on absorbing hydrogen chloride gas
Upstairs, is there any theoretical basis for this?
Dilute hydrochloric acid provides good absorption efficiency. Since the absorption of hydrogen chloride is an exothermic reaction, when pure water is used, the rapid absorption generates a large amount of heat that cannot be dissipated in time, causing the temperature of the solvent to rise. Moreover, the solubility of hydrogen chloride decreases as temperature increases; therefore, dilute hydrochloric acid is generally used for the absorption of hydrogen chloride in order to control the absorption rate and achieve a higher concentration of hydrochloric acid.