Magnesium Chloride Is Often Used to Melt Ice on Sidewalks $\degree$

question 71

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 $\degree$ C/m)

• A)(-41.0 \(\degree\)C)
• B)(-31.8 \(\degree\)C)
• C)(-10.6 \(\degree\)C)
• D)(-25.0 \(\degree\)C)
• E)(-29.2 \(\degree\)C)

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