Magnesium Chloride Is Often Used to Melt Ice on Sidewalks

question 89

Multiple Choice

Magnesium chloride is often used to melt ice on sidewalks. Considering that the solubility of magnesium chloride (95.21 g/mol) in water is 54.3 g per 100.0 g of water, what is the lowest temperature that you would expect to be able to melt ice with magnesium chloride? Assume ideal behavior. K_f (water) = 1.86°C/m

• A) -40°C
• B) -32°C
• C) -11°C
• D) -25°C
• E) -22°C

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