Question

Ethylene glycol is the active ingredient in most commercial automobile antifreeze. Why wouldn't sodium chloride be used in a similar way?

a. Sodium chloride solute does not lower the freezing point of water.

b. Sodium chloride does not dissolve in water.

c. Sodium chloride lowers the freezing point of water but has other undesirable characteristics.

d. Sodium chloride is a solid while ethylene glycol is a liquid.

Explain your answer:

Answer 1

Answer= c. Sodium chloride lowers the freezing point of water but has other undesirable characteristics.

If you use NaCl as anti freeze it will corrode your engine since Na has high corrosive power. Moreover, being salt it will deposit at the bottom of the chamber and will not be able to work as anti freeze

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