QUESTION 3. a) Find the AH for the reaction below, given the following reactions and subsequent AH values: H2SO () - SO,((g) + H;0(g) H2S(g) + 2Oz(g) + H,SO,1) H2S(g) + 2 O2(g) → SO3(g) + H2O(1) AH =-235.5 kJ H2O(1) → H20(g) AH =-207 kJ AH = 44 kJ b) Do you expect the overall reaction to be exothermic or endothermic. Justify your answer. C) Using the answer from part a. Calculate the change in energy if 67.5 g of SO3 was collected during the experiment d)lf the 67.5 grams of SO3 were collected at 31 degrees Celsius, at 2.5 atm, calculate the volume of the collected gas. QUESTION 4. Movable Piston Valve O,(g) a) During an experiment Oxygen gas was collected in a container as shown above. The gas was collected at 25 degrees Celsius and 2.4 atm. The size of the container above is 5.4 Liters. Calculate the density of the gas in g/ml. b) After collecting all the gas, the student pushed down the piston to half of the original Volume and measured the temperature, which remained at 25 degrees Celsius. How did this action change the density of the gas calculated in part b? Justify your answer with sample calculations.

QUESTION 3. a) Find the AH for the reaction below, given the following reactions and subsequent AH values: H2SO () - SO,((g) + H;0(g) H2S(g) + 2Oz(g) + H,SO,1) H2S(g) + 2 O2(g) → SO3(g) + H2O(1) AH =-235.5 kJ H2O(1) → H20(g) AH =-207 kJ AH = 44 kJ b) Do you expect the overall reaction to be exothermic or endothermic. Justify your answer. C) Using the answer from part a. Calculate the change in energy if 67.5 g of SO3 was collected during the experiment d)lf the 67.5 grams of SO3 were collected at 31 degrees Celsius, at 2.5 atm, calculate the volume of the collected gas. QUESTION 4. Movable Piston Valve O,(g) a) During an experiment Oxygen gas was collected in a container as shown above. The gas was collected at 25 degrees Celsius and 2.4 atm. The size of the container above is 5.4 Liters. Calculate the density of the gas in g/ml. b) After collecting all the gas, the student pushed down the piston to half of the original Volume and measured the temperature, which remained at 25 degrees Celsius. How did this action change the density of the gas calculated in part b? Justify your answer with sample calculations.

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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2. Use the AH information provided to calculate AHn° for the following. SHOW YOUR WORK!! SO,CL.(g) + 2 Ho0(1) → 2 HCI(g) + H,SO.(1) AHrxn° = ? AH{(kJ/mol) SO,Cl.(g) -364 H,O(1) -286 HCI(g) -92 H,SO.(1) -814 a. -256 kJ b. +161 kJ C. -62 kJ d. +800 kJ e. -422 kJ
1.7
Given the following reactions N2 is + 02 ig)→ 2 NO AHn = +178 kJ NO2 g → NO (a) + 1/2 O2 (3) AHrn = +96.6 kJ What is the enthalpy of reaction (AH nn in kJ) for 4 NO 2 NO2 (gl + N2 (g) AHan = ? TXD Enter your answer
Task 3.2. Calculate the standard enthalpy of reaction of some thermochemical equations governed by Hess Law. Direction: Solve the following items. Show complete solution. Express all standard enthalpy to kilojoules.
Determine the AH for the reaction 2 N₂O3(g) From the equation: 1. N₂O3(g) 2. 2 N2(g) + 1/2O2(g) 3. 2 N2(g) + O2(g) - 2 N2(g) + 3 O2(g) NO(g) +NO2(g) NO(g) NO2(g) AH = 39.7 kJ AH = 90.4 kJ ΔΗ = 33.8 kJ
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THERMODYNAMICS: Given the following hypothetical thermochemical equations: 20J3 (g) + 302x (g) – 402 (g) + 3J2X () AH = -1,017.3 kJ 4QJ3 (e) + 3X2 (@) – 202 (g) + 6J2X (1) AH = -1,548.8 kJ Calculate the value of AH (in kJ) for the reaction: a2 (g) + % X2 (a) - Q2X (g) (Round off the final answer to ONE decimal place. Do not include unit.)
1) PCI3(1) + Cl2(g) - PCI5(g) Jse equations (2) and (3) to calculate AHrxn of equation (1): 2) P4(s) + 6Cl2(g)→ 4PCI3(1) AH =-1280 kJ 3) P4(s) + 10C12(g) → 4PCI5(g) AH =-1774 kJ
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Question 4 THERMODYNAMICS: Calculate the value of AH (in kJ) for the reaction, 2AR3 (g) + Q (s) → A2R4 (g) + QR2 (s) given the following hypothetical thermochemical equations: 2AR3 (g) + 2AX (g) → A2R4 (g) + 2XAR (g) AH = -81.9 kJ AX (g) + ½R2 (g) → XAR (g) AH = -159.1 kJ Q (s) + R2 (g) → QR2 (s) (Round off final answer to ONE decimal place) AH = -510.4 kJ Round your answer to 1 decimal place.
Q4: Calculate the enthalpy of the reactions below: 1. H;Om + CO2 (aq) - H,CO3 (aa) 2. H;POalag) + 3OH, → 3H;0m + POaloa) 3. C;Ha (a) + 302 () → 2H,06) + 2CO2 (9) AHP of H,CO3 (oa) is -699.65 kJ/mole