Diluting ethylene glycol deicing fluid with water under nonprecipitation conditions will do what to the freeze point?

When ethylene glycol deicing fluid is diluted with water, the overall freezing point of the mixture is influenced by the properties of both components. Ethylene glycol has a lower freezing point compared to water, which means that when it is mixed with water, the resulting solution can actually lower the freezing point even further when a specific concentration is maintained.

In this case, diluting ethylene glycol with water introduces more water into the mix, but since ethylene glycol is a significant component and has a lower freezing point than pure water, it still dominates the thermal properties of the mixture. However, at higher concentrations of water, the effectiveness of ethylene glycol in maintaining a low freezing point diminishes. Therefore, the overall freezing point of the mixed solution is decreased as the concentration of freezable water increases relative to the ethylene glycol.

The reasoning behind the other choices reflects a misunderstanding of how freezing points are affected by mixtures. For example, increasing the freeze point or having no change would imply that the properties of the ethylene glycol are negated, which does not occur with the described dilution. Thus, the decrease in freezing point when diluting ethylene glycol with water is a direct reflection of the properties of the antifreeze behavior of ethylene glycol being