Greetings, I am having trouble with a concept. The excerpt in a book that I have
ID: 680656 • Letter: G
Question
Greetings,I am having trouble with a concept.
The excerpt in a book that I have states this: The addition of saltto a road will lower the temperature atwhich water freezes, which prevents the streets from becoming icerinks.
^^^ I would think that salt would raisethe temperature at which water freezes, so it would melt quicker.Also, why would one want to lower the freezing point, whentypically when it snows, temperature stays cold for a while. Itseems like to me that ice would stay on the road longer if it didwhat the excerpt in the book discussed.
Why wouldn't the excerpt say that salt lowers the melting point,verses, saying freezing point?
I am so confused with this seemingly simple concept. May someonekindly break it down to a basic level. I will be grateful and rankyour response too.
Explanation / Answer
The addition of soluble impurity to a liquid always lowersits melting or freezing point. This is a known fact.
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