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2. A solution of silver nitrate was combined with a solution of hydrochloric acid to produce solid silver chloride and aqueous nitric acid. The initial temperature of each solution was 22.60 °C and the final temperature of the mixture was recorded at 23.40 °C. The mass of the reaction was 100.00 g and the specific heat capacity of the solution was 4.18 J/g.°C. Calculate the heat that accompanies this reaction in kJ/mol. Is the reaction endothermic or exothermic?

2. A solution of silver nitrate was combined with a solution of hydrochloric acid to produce solid silver chloride and aqueous nitric acid. The initial temperature of each solution was 22.60 °C and the final temperature of the mixture was recorded at 23.40 °C. The mass of the reaction was 100.00 g and the specific heat capacity of the solution was 4.18 J/g.°C. Calculate the heat that accompanies this reaction in kJ/mol. Is the reaction endothermic or exothermic?

Chemistry: The Molecular Science
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 65QRT
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Life University General Chemistry I Lab CHM 111L Hess's Law Pre Lab 1. Enthalpy is a state function. What does it mean to be a state function? 2. A solution of silver nitrate was combined with a solution of hydrochloric acid to produce solid silver chloride and aqueous nitric acid. The initial temperature of each solution was 22.60 °C and the final temperature of the mixture was recorded at 23.40 °C. The mass of the reaction was 100.00 g and the specific heat capacity of the solution was 4.18 J/g.°C. Calculate the heat that accompanies this reaction in kJ/mol. Is the reaction endothermic or exothermic? 3. Consider the following set of reactions: Overall reaction: CHale) + NH3(8) → HCN) + 3 H2e) AHoveral = ??? kJ AH = -91.8 kJ Reaction 1: N2(e) + 3 H2e) → 2 NH3) Reaction 2: Cs) + 2 H2e) → CHA8) Reaction 3: H2ige) + 2 Cs) + N2e) → 2 HCN() AH2 = -74.9 kJ AH3 = +270.3 kJ a. What must be done to Reaction 1 to get NH3 on the reactant side? What is the resulting value of AH,? (Do not forget the unit) b. What must be done to Reaction 2 to get CH, on the reactant side? What is the resulting value of AH2? (Do not forget the unit) c. What must be done to Reaction 3 to get one mole of HCN on the product side? (Do not forget the unit) What is the resulting value of AH3? d. Calculate the AHoverall by doing a summation of the modified reactions 1-3. (Do not forget the unit) Life University CHM 111 May 2021
Transcribed Image Text:Life University General Chemistry I Lab CHM 111L Hess's Law Pre Lab 1. Enthalpy is a state function. What does it mean to be a state function? 2. A solution of silver nitrate was combined with a solution of hydrochloric acid to produce solid silver chloride and aqueous nitric acid. The initial temperature of each solution was 22.60 °C and the final temperature of the mixture was recorded at 23.40 °C. The mass of the reaction was 100.00 g and the specific heat capacity of the solution was 4.18 J/g.°C. Calculate the heat that accompanies this reaction in kJ/mol. Is the reaction endothermic or exothermic? 3. Consider the following set of reactions: Overall reaction: CHale) + NH3(8) → HCN) + 3 H2e) AHoveral = ??? kJ AH = -91.8 kJ Reaction 1: N2(e) + 3 H2e) → 2 NH3) Reaction 2: Cs) + 2 H2e) → CHA8) Reaction 3: H2ige) + 2 Cs) + N2e) → 2 HCN() AH2 = -74.9 kJ AH3 = +270.3 kJ a. What must be done to Reaction 1 to get NH3 on the reactant side? What is the resulting value of AH,? (Do not forget the unit) b. What must be done to Reaction 2 to get CH, on the reactant side? What is the resulting value of AH2? (Do not forget the unit) c. What must be done to Reaction 3 to get one mole of HCN on the product side? (Do not forget the unit) What is the resulting value of AH3? d. Calculate the AHoverall by doing a summation of the modified reactions 1-3. (Do not forget the unit) Life University CHM 111 May 2021
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