GAS EVOLUTION AND PRESSURE INCREASE DURING UNDESIRABLE CHEMICAL-REACTIONS - A SURVEY OF THE EXPERIMENTAL METHODS TO DETECT GAS EVOLUTION AND PRESSURE INCREASE

The methods of measurement presented enable gas evolution and pressure build-up to be ascertained in constant volume or constant pressure mo de. Conversion of these results to match other pressures, however, is only possible given very precise knowledge of gas solubility and the r eal behaviour of the gas concerned. Consequently, it is advisable to c arry out measurements under the conditions actually presupposed by the question at issue.