A 1000 ML Sample of 0

question 115

Multiple Choice

A 100.0 mL sample of 0.300 mol L^-1 NaOH is mixed with a 100.0 mL sample of 0.300 mol L^-1 HNO₃ in a coffee cup calorimeter. If both solutions were initially at 35.00 °C and the temperature of the resulting solution was recorded as 37.00 °C, determine the H° (in units of kJ ) for the neutralization reaction between aqueous NaOH and HNO₃ . Assume 1) that no heat is lost to the calorimeter or the surroundings, and 2) that the density and the heat capacity of the resulting solution are the same as water.

• A) -55.7 kJ mol^-1
• B) -169 kJ mol^-1
• C) -16.7 kJ mol^-1
• D) -27.9 kJ mol^-1
• E) -34.4 kJ mol^-1

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