4. Calculate AH for the reaction:4 NH3(g) + 502(g) → 4 NO(g) + 6 H₂O (1) from the following data.N2(g) + O2(g)N2(g) +3 H2(g)→>2 NO(g)→2 NH3(g)2 H2(g) + O2(g) → 2 H₂O(1)AH = -180.5 kJΔΗ = -91.8 kJAH = -483.6 kJ5. The molar enthalpy of solution for sodium acetate (CH3COONa) is -24.6 kJ/mol. How muchsodium acetate is needed to raise 125.0 mL of water from 20.0 °C to 28.0 °C? 6. When 2.65 g of calcium chloride (CaCl2) is added to 100.00 mL of water, the temperature risesfrom 23.0°C to 30.1°C. What is the molar enthalpy of solution? (7. The following equilibrium reaction has a Keq value of 2.5×106:2 CO2(g) = 2 CO(g) +Oz(g)Calculate the equilibrium concentrations of all gases if 0.800 mol of CO2(g) is initially placed in a2.00 L reaction container. (-

QUESTION 4 Calculating ΔH for the…

Answered: 4. Calculate AH for the reaction:4…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Consider these reactions, where M represents a generic metal. 1. 2 M(s) + 6 HCl(aq) → 2 MCl, (aq) + 3 H, (g) AH1 = -582.0 kJ 2. HCl(g) → HCl(aq) AH2 = -74.8 kJ 3. H, (g) + Cl, (g) → 2 HCI(g) AH3 = -1845.0 kJ 4. MCI, (s) → MCI, (aq) AH4 = -434.0 kJ Use the given information to determine the enthalpy of the reaction 2 M(s) + 3 Cl, (g) → 2 MCI, (s) ΔΗ- kJ
The reaction between HCl and NaOH is represented below. When equal volumes of 1.00 M NaOH and 1.00 M HCl are mixed, 57.1 kJ of heat is released. What would A H be if 2.00 M HCI and 2.00 M NaOH is used instead of 1.00 M? HCl(aq) + NaOH(aq) → NaCl(aq) + H₂O(l) AH = -57.1 kJ/mol... (A) - 28.6 kJ B-85.7 kJ (c) -57.1 kJ D - 114 kJ
Consider these reactions, where M represents a generic metal. 1. 2 M(s) + 6 HC1(aq) → 2 MCl,(aq) + 3 H,(g) ΔΗ = -589.0 kJ 2. HCI(g) → HCI(aq) AH2 = -74.8 kJ 3. H,(g) + Cl,(g) –→ 2 HCI(g) AH3 = -1845.0 kJ 4. MCI,(s) → MCl,(aq) AH4 = -262.0 kJ Use the given information to determine the enthalpy of the reaction 2 M(s) + 3 Cl,(g) → 2 MCl,(s) ΔΗ- kJ
When 3.02 g of NHẠCI is dissolved in enough water to make 20.05 mL of solution, the temperature dropped from 19.8°C to 9.1°C. Calculate the enthalpy change (in kJ) when 1 mole of NH4CI is dissolved in water. The density and specific heat of water are 1.00 g/mL and 4.18 J/g°C respectively. Type your numeric answer and submit
If 2.36 g of calcium dichloride dissolves in 84.00 g of water in a kalorimeter at a constant pressure, the temperature increases from 18.000C to 19.279C. Assuming that the kalorimeter absorbs no heat and the specific heat of the solution is the same as that of water (SpHt = 4.184 J/g C). What is the heat change of the solution of calcium chloride in units of kj/mol calcium dichloride? Please show step by step work.
Which reaction would it be possible to calculate (Triangle H)?
Consider the following equation for the combustion of H₂: 1 H₂(g) + H₂(g) + O₂(g) → O₂(g) → H H₂O(g) + 243 kJ In order to produce 972 kJ of heat, what mass of H₂ must burn?
50 g of solid sodium hydroxide is dissolved in 175 mL of water. Using a coffee-cup calorimeter, the temperature change of the water is measured to be -2.1°C. Which equation best describes this system? NaOH(s)→NaOH(aq) + kJ NaOH(s)+ kJ →NaOH(aq) NaOH(s)→NaOH(l) + kJ NaOH(aq)→NaOH(s) + kJ NaOH(aq)+ kJ →NaOH(s) NaOH(l)+ kJ → NaOH(s) What is the definition of the temperature of a substance? the speed of the slowest particles in the substance, subtracted from the speed of the fastest particles. the heat capacity of the substance times its mass a measure of the average kinetic energy of a system the total heat content of a substance the speed of the fastest particles in the substance Which statement describes an endothermic reaction? The surroundings warm up. The system releases energy. The potential energy of the products is less…
#3
Consider these reactions: Reaction 1: H2(g) + Cl2(g) 2HCl(9) AH = -184.6 kJ Reaction 2: 20F2(g) → O2(g) +2F2(g) AH=-49.4 kJ Reaction 3: Na (g) +202 (9) 2NO2(g) AH = +66.4 kJ Use Reaction 1. Determine the mass, in grams, of chlorine gas consumed (with excess H₂) when 1,409.0 kJ of energy is released from the system. Round to the nearest whole number .
1. A thermometer placed in a solution undergoing a chemical reaction indicates an increase in temperature as the reaction proceeds. Is this reaction endothermic or exothermic? Describe if heat energy is lost or gained from the reaction (the system) to the surroundings. What is the sign of the enthalpy change (AH) of this reaction? 2. A student performs a reaction and determines the enthalpy change (AH) to be 31.4 kJ. Will the temperature of the surrounding solution increase or decrease as a result of this chemical process? 3. If you hold 3 grams of ice in your hand at room temperature, your hand will become cold. a) Is the reaction H,O(s) – H,O(1) endothermic or exothermic? b) In which direction does heat flow?
Consider these reactions, where M represents a generic metal. 1. 2 M(s) + 6 HCl(aq) → 2 MCI, (aq) + 3 H, (g) ΔΗ = -847.0 kJ 2. HCI(g) → HCl(aq) AH2 = -74.8 kJ H,(g) + Cl,(g) → 2 HCl(g) 3. AH3 = -1845.0 kJ 4. MCI,(s) –→ MCI, (aq) AH4 = -424.0 kJ Use the given information to determine the enthalpy of the reaction 2 M(s) + 3 Cl, (g)→ 2 MCI, (s) ΔΗ-

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