When 100 G KOH Is Dissolved in 100 $\circ$ C to 47

question 22

Multiple Choice

When 10.0 g KOH is dissolved in 100.0 g of water in a coffee-cup calorimeter,the temperature rises from 25.18 ^$\circ$ C to 47.53 ^$\circ$ C.What is the enthalpy change per gram of KOH dissolved in the water? Assume that the solution has a specific heat capacity of 4.18 J/g.K.

• A) -116 J/g
• B) -934 J/g
• C) -1.03 \(\times\) 10³ J/g
• D) -2.19 \(\times\) 10³ J/g
• E) -1.03 \(\times\) 10⁴ J/g

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