During lab, a student mixed 25 mL of 1.0 M H3PO4 with 75 mL of 1.0 M NaOH. Using the equation below, determine how many moles of reaction the student performed. give your answer to 2 sigfigs. H3PO4 (aq) + 3 NaOH (aq) → Na3PO4 (aq) + 3 H₂O (1) moles of reaction The intial temperature of both the acid and the base were 22.6 °C, but they rose to 28.2 °C during the reaction. If the calorimeter constant was 78.5 J/°C, what was arxn in J? Give your answer to 3 sigfigs, and watch your signs! Using your answers above, what was the reaction enthalpy, AHrxn, in kJ per mol reaction? Give your answer to 2 sigfigs, and watch units! kJ/mol of reaction

During lab, a student mixed 25 mL of 1.0 M H3PO4 with 75 mL of 1.0 M NaOH. Using the equation below, determine how many moles of reaction the student performed. give your answer to 2 sigfigs. H3PO4 (aq) + 3 NaOH (aq) → Na3PO4 (aq) + 3 H₂O (1) moles of reaction The intial temperature of both the acid and the base were 22.6 °C, but they rose to 28.2 °C during the reaction. If the calorimeter constant was 78.5 J/°C, what was arxn in J? Give your answer to 3 sigfigs, and watch your signs! Using your answers above, what was the reaction enthalpy, AHrxn, in kJ per mol reaction? Give your answer to 2 sigfigs, and watch units! kJ/mol of reaction

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

Section: Chapter Questions

Problem 120QRT

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