Answer :
Final answer:
The significance of ethyl alcohol having a vapor pressure of 38.8 mmHg is that it can readily evaporate due to its high volatility.
Explanation:
When ethyl alcohol (C₂H5OH) has a vapor pressure of 38.8 mmHg, it means that at a given temperature, the molecules of ethyl alcohol are escaping from the liquid phase and entering the gas phase. This vapor pressure is significant because it determines the volatility of the substance and its ability to evaporate. In the case of ethyl alcohol, a high vapor pressure means that it readily evaporates, which is why it is commonly used as a solvent and a disinfectant.
