Suction gas plants . the liquid within it more tube is connected to a bulb of about 150 , capacity, whichis nearly filled with the absorbing reagent. The bulb is connectedby means of a U-tube with another of the same size, but placeda little higher up, so that the lower bulb may be flooded if reagent therefore nearly fills the lower bulb, completely fillsthe U-tube, and occupies a small part of the upper bulb. Thegas is now passed into the pipette by opening the pinchcock ofthe measuring tube and raising the pressure tube so that themercury rises in the measuring tu
Suction gas plants . the liquid within it more tube is connected to a bulb of about 150 , capacity, whichis nearly filled with the absorbing reagent. The bulb is connectedby means of a U-tube with another of the same size, but placeda little higher up, so that the lower bulb may be flooded if reagent therefore nearly fills the lower bulb, completely fillsthe U-tube, and occupies a small part of the upper bulb. Thegas is now passed into the pipette by opening the pinchcock ofthe measuring tube and raising the pressure tube so that themercury rises in the measuring tube and drives the gas beforeit into the first bulb of the pipette, where it meets the us suppose that we wish to absorb the COj present in thegas. The reagent in the pipette is then potassium hydrate(KHO). The gas is passed into the first bulb, as we have seen,until the mercury from the measuring tube begins to rise up thecapillary U-tube, when the pinchcock is closed. This ensures 174 SUCTION GAS i.^^^Vkk<.kkk^^^<v^.i^^^^^^^^ix::^^!^^^^>^^i^^^^4iiiij^^i^^^
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