Final answer:
The dry gas standard can become less accurate over time due to factors such as moisture adsorption and chemical degradation. These changes can impede the calibration of analytical instruments. Gas liquefication is also associated with a decrease in entropy, indicating increased orderliness.
Step-by-step explanation:
The question 'What happens to the dry gas standard over time?' addresses the stability and performance of a reference material used to calibrate analytical instruments in chemistry. Over time, the dry gas standard could potentially become less accurate due to various factors including the adsorption of moisture, chemical degradation, or interactions with the container's walls. This degradation can lead to errors in instrumentation calibration and is why reference standards typically have an expiration date.
When the dry gas comes into contact with a liquid, vaporization and condensation processes continue until an equilibrium is established and the vapor pressure becomes constant. Humidity can affect the rate of evaporation, as increased humidity leads to decreased evaporation rates. When a gas liquefies, it indeed becomes more orderly, and its entropy decreases, showing a transition to a more ordered state.