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    Salting Sidewalks

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    Living in Michigan, we are accustomed to having snow and ice on our sidewalks. Besides "chipping" the ice away, we add something (usually a salt) to the sidewalks and the ice melts. In addition, if we use calcium chloride rather than sodium chloride, we find we have to use less calcium chloride than sodium chloride to obtain the same results. Fully explain these observations.

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    Each mole of CaCl2 contains 3 moles of ions whereas each mole of NaCl contains 2 moles of ions. ...

    Solution Summary

    This solution explains the given observations.