I. The Decomposition of Di-Ortho-Tolyliodonium Iodide. II. Joule-Thomson Coefficients of Some Hydrocarbon Gases. III. The Hydration of Acetylene

I. The Decomposition of Di-Orthotolyliodonium Iodide No abstract II. Joule-Thomson Coefficients of Some Hydrocarbon Gases In determining the thermal properties of hydrocarbons in the gaseous region the Joule-Thomson coefficient is a powerful tool when known as a function of the state. The purpose of the present paper is to describe an apparatus developed to measure this property, to report upon the data obtained for propane, and to outline the usefulness of this measurement in thermal calculations. III. The Hydration of Acetylene An analytical method for the determination of acetylene in aqueous solution is described together with tests to ascertain its validity. Rates of homogeneous reaction were experimentally determined for the mercuric sulfate catalysed hydration of acetylene in sulfuric acid solution. The dependence of rate upon acetylene and mercuric sulfate is established and the effect of acetaldehyde is discussed.