Two solutions, 20.00 mL of 2.50 M HCl(aq) and 20.00 mL of KOH(aq) of 2.50 M KOH(aq) both initially at 21.0 °C, are added to a Styrofoam-cup calorimeter and allowed to react. The temperature rises to 37.8 °C. Determine the heat of reaction, AHxn, in J per moles of HCI. Is the reaction endothermic or exothermic? this problem involves same calculations as done for the and Csol'n = 4.122 (Hint: dsolm = 1.021 experiment). T₁ = 21,0 c mL

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter4: Energy And Chemical Reactions
Section4.8: Measuring Reaction Enthalpies: Calorimetry
Problem 4.17E
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3. Two solutions, 20.00 mL of 2.50 M HCl(aq) and 20.00 mL of KOH(aq) of 2.50 M KOH(aq) both initially at 21.0
°C, are added to a Styrofoam-cup calorimeter and allowed to react. The temperature rises to 37.8 °C.
Determine the heat of reaction, AHxn, in J per moles of HCI. Is the reaction endothermic or exothermic?
(Hint: dsolm = 1.021 and Csol'n = 4.122; this problem involves same calculations as done for the
experiment).
T₁ = 21.0°C
mL
Chemist
Transcribed Image Text:3. Two solutions, 20.00 mL of 2.50 M HCl(aq) and 20.00 mL of KOH(aq) of 2.50 M KOH(aq) both initially at 21.0 °C, are added to a Styrofoam-cup calorimeter and allowed to react. The temperature rises to 37.8 °C. Determine the heat of reaction, AHxn, in J per moles of HCI. Is the reaction endothermic or exothermic? (Hint: dsolm = 1.021 and Csol'n = 4.122; this problem involves same calculations as done for the experiment). T₁ = 21.0°C mL Chemist
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