Hydrogen system, bubble point pressures

Figure 5. Comparison of predicted and experimental bubble point pressures for methanol-hydrogen sulfide system ((O, A, VJ (24) (-------) predicted)...

COMPARISON OF PREDICTED AND EXPERIMENTAL BUBBLE POINT PRESSURE FOR THE NITROGEN-CARBON DIOXIDE, HYDROGEN SULFIDE, METHANOL SYSTEM AT -15°C (From Reference 9)... 

Another example of a redox electrode is a gas electrode such as the hydrogen electrode discussed above. In this system a constant concentration of molecular hydrogen is maintained in the electrolyte solution, which also contains the hydrogen ion H. In order to achieve these conditions, hydrogen gas at constant pressure is bubbled over the inert platinum electrode at the point where it contacts the solution (fig. 9.1). Other gas electrodes involve molecular oxygen and chlorine. 

The bomb is then placed in the jacket, and the gas inlet tube is fastened securely. The thermocouple is also inserted. From this point on, all operations should be performed on the other side of the wall separating the operator from the equipment. Hydrogen is bled into the bomb from the high-pressure tank, the valve to the tank is closed, and the bomb is allowed to stand for about a half hour in order to test for leaks. If a leak has developed, as indicated by a drop in pressure, one locates it by painting all the joints with a soap solution and looking for bubbles of gas, which indicate a leak. The connector is tightened, and if this does not stop the leak, the pressure in the system should be released, the connection disassembled, and the tapered end of the tube re-formed with a tool supplied for the purpose. These measures usually will stop the leak, but if they do not, it will be necessary to ream out the connector seat with the reamer designed for this purpose. 

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