gravity of theacid when drawn off is about 1-GOO = 120° TwaddeU. It isthen evaporated in leaden tanks, until the specific gravitybecomes about 1-76, or 1520 TwaddeU. If the operationwere continued further, the acid would act upon the lead; itis consequently transferred to vessels of glass or… … Generate sulphurous acid SOo in one bottle, (B) and peroxideof nitrogen NO, in another (C), and cause the t^^o S^Jff ^ ^^meet in a third bottle (A), having a little water at bottomthe formation of sulphuric acid will go on as descnbed andbe found in the water of the condensing vessel (A) alter…
Dyes and dyeing
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