A Mixture of Solid NaCl and CaCl₂ Contains 10

question 32

Multiple Choice

A mixture of solid NaCl and CaCl₂ contains 10.0 g of NaCl, and an unknown amount of CaCl₂.  When the entire mixture is dissolved in 1.00 kg of water, the boiling point changes by 0.25 ºC.  What mass of CaCl₂ was in the original mixture? Kb for water is 0.512 K. kg . mol⁻¹. 

• A) 5.4 g
• B) 8.1 g
• C) 35.2 g
• D) Not enough data to answer the question
• E) None of the above

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