Integrated experimental device and method for combustion of hydrogen in chlorine

Abstract

The invention discloses an integrated experimental device and method for combustion of hydrogen in chlorine. The integrated experimental device comprises a support, wherein a conical flask located above a combustion nozzle is arranged on the support, a sponge mat is arranged in the conical flask, a first test tube, a second test tube and a third test tube are arranged on the support through clamps, a sponge strip is arranged in the first test tube, the first test tube is communicated with the second test tube through a tee-shaped conduit provided with a tee-shaped valve, an air outlet pipe isarranged on a rubber plug cover at the upper end of the first test tube, the second test tube is communicated with the combustion nozzle through a tee-shaped conduit, the second test tube is communicated with the third test tube through a conduit, and the third test tube is communicated with the one-way blowing balloon through a conduit. Hydrogen generated by reaction of a hydrogen generation device enters the inner pipe and chlorine generated by reaction of the chlorine generation device enters the combustion nozzle to be subjected to combustion reaction, so that preparation of hydrogen and chlorine and a combustion experiment of hydrogen in chlorine can be carried out in a closed space, escape of harmful gas is avoided, and the problem of environmental pollution caused by experiments iseffectively solved.

Description

technical field [0001] The invention belongs to the technical field of chemical experiment equipment, and in particular relates to an integrated experimental device and method for hydrogen combustion in chlorine gas. Background technique [0002] In middle school chemistry textbooks, "Hydrogen Combustion Experiment in Chlorine" is an important classic classroom demonstration experiment. A method is adopted in general middle-level chemistry textbooks, which is to ignite the hydrogen gas and insert it into a gas cylinder filled with chlorine gas. The hydrogen gas burns quietly in the chlorine gas, and the color of the flame and its experimental phenomena are observed. Although the experimental method in the textbook is obvious, there are many shortcomings: first, chlorine gas is usually produced by heating reaction of concentrated hydrochloric acid and manganese dioxide, because concentrated hydrochloric acid is easy to volatilize a large amount of hydrogen chloride gas under ...

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Problems solved by technology

Although the experimental method in the textbook is obvious, there are many shortcomings: first, chlorine gas is usually produced by heating reaction of concentrated hydrochloric acid and manganese dioxide, because concentrated hydrochloric acid is easy to volatilize a large amount of hydrogen chloride gas under heating conditions, making the product The impurities contained in chlorine will interfere with the combustion experiment; second, the hydrogen and chlorine required for combustion require a complex preparation system, which has problems such as large consumption of reactants and inconvenient loading, unloading and cleaning; third, hydrogen burns in chlorine When the chlorine gas in the bottle and the hydrogen chloride gas generated during combustion easily escape from the mouth of the gas collecting bottle, it will cause indoor environmental pollution.

These problems have brought great difficulties to experimental teaching, increased the work intensity of experimental preparation, and did not conform to the concept of green chemistry and environmental protection

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