When 175 G of CaCl₂ Dissolves in 125 G of Water

question 5

Multiple Choice

When 1.75 g of CaCl₂ dissolves in 125 g of water in a coffee-cup calorimeter,the temperature increases by 2.44°C.What is the heat change per mole of CaCl₂ dissolved in water? Assume that all the heat is absorbed by the water (c = 4.18 J/g⋅°C) .

• A) −11.3 kJ
• B) −728 J
• C) −1.13 kJ
• D) −80.9 kJ
• E) −91.9 kJ

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