the critical point of free acetylene is ____ psi ( ___ KPA) pressure at 21C (70F) if the temperature is increased the pressure becomes critical at a ______ pressure
28 psi, 193 kpa, lower pressure
The critical point of free acetylene is 61.1 psi (or approximately 421 kPa) pressure at 21C (70F).
If the temperature is increased, the pressure at which acetylene becomes critical will also increase. This is because the critical pressure of a gas is inversely proportional to its critical temperature. As the temperature increases, the pressure must also increase in order to maintain the critical state.
For example, if the temperature of free acetylene is increased to 60C (140F), the critical pressure would be approximately 106 psi (731 kPa).
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