2. Standard ...M3. AS surrou***1req4. AG° = AH°...M5. AG: Pre...1req6. AG: Enthal...M7. AG fro...1req8. Calculat...1reqquestion.Consider the reaction2NO(g) + O2(g)—>2NO2(g)Using the standard thermodynamic data in thetables linked above, calculate A Grxn for thisreaction at 298.15K if the pressure of each gas is21.99 mm Hg.9. Calculat...1reqANSWER:kJ/mol10. Calcul...1reqQuestionQuestionSubmit AnswerVisitedgroup attempts remainingRetry Entire GroupQuestion

ΔGrxn = ΔHrxn - TΔS 2 NO(g) + O₂(g) → 2 NO₂(g) Standard enthalpies of formation: (This is a constant…

Answered: 2. Standard ... M 3. AS surrou*** 1req…

Chemistry

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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

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

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I Review Constants Periodic Table For a certain chemical reaction, AH° = -35.8 kJ and AS° = -80.0 J/K. Part A Is the reaction exothermic or endothermic? O exothermic O endothermic Submit Prevlous Anewere v Correct Anegative enthalpy value indicates that energy is released by the system. Therefore, the reaction is exothemic. Part B Does the reaction lead to an increase or decrease in the disorder of the system? O increase O decrease Submit Previous Anawere v Correct The sign of the entropy change is negative, which indicates that the disorder, or entropy, of the system has decreased. • Part C Calculate AG for the reaction at 208 K. Express your answer using two significant figures. emplates Symbols undo redo feset keyboard shortcuts Help AG" = 7.98 kJ Submit Prevlous Anewere Requeet Anawer X Incorrect; Try Again; 4 attempts remaining
The solubility of Mg(OH), in water at 25 °C is measured to be 0.0096 . Use this information to calculate K, for Mg(OH),. sp Round your answer to 2 significant digits.
口く> session.masteringchemistry.com Bb Week 5: Chp 4 - Chemical Quantities and Aqueous Reactions &... E MasteringChemistry: Chapter 5 V
For the denitrification [microbiological conversion of nitrite/nitrate (N-containing contaminants) to nitrogen gas (harmless end product)] to be more effective, an external carbon source (e.g., methanol) is frequently added for denitrifiers (denitrifying microorganisms) during the reaction. The following chemical reaction is for when methanol is added for this purpose. Calculate how much (concentration) of methanol (in mg/L) needs to be added to completely convert 30 mg/L of NO3--N to N2 gas. 0.1667 CH3OH + 0.1343 NO3- + 0.1343 H+ ↔ 0.0143 C5H7O2N + 0.06 N2 + 0.3505 H2O + 0.0952 CO2
consider the reaction 2A + 2B + C -›D + 3E A plot of Ln (pressure in torr) versus 1/ T (in kelvin) produce a straight line with an equation of the line Y=-23.70X+ 1.56 Determine the deltaH for this reaction in (kJ/mol) and determine if the reaction is exothermic or endothermic
Hydrogen bromide dissociates into its gaseous elements, H2 and Brg, at elevated temperatures. AH, kl/mol S", J/(mol·K) HBr(9) -36.44 198.6 H2 (9) 130.6 Bra (9) 30.91 245.3 a. Calculate the percent dissociation at 383°C and 1.00 atm. (Enter your answer to three significant figures.) Percent dissociation % b. What would be the percent dissociation at 383°C and 10.0 atm? (Enter your answer to three significant figures.) Percent dissociation c. Use data above and any reasonable approximation to obtain К. (Enter your answer to three significant figures.) K=
Initially 10.0 mol of ammonia gas is injected into a 4.0 L container. At equilibrium 1.2 mol of nitrogen gas is found in the container. The number of moles of ammonia gas at equilibrium would be? 2NH3(g) + 94 kJ <=====> N2(g) + 3H2(g)
Predict whether the following reactions will be exothermic or endothermic. A. N2(g)+3H2(g)⟶2NH3(g)N2⁡(g)+3⁢H2⁡(g)⟶2⁢NH3⁢(g) B. S(g)+O2(g)⟶SO2(g)S(g)+O2⁡(g)⟶SO2⁢(g) C. 2H2O(g)⟶2H2(g)+O2(g)2⁢H2O(g)⟶2⁢H2⁡(g)+O2⁡(g) D. 2F(g)⟶F2(g)2F(g)⟶F2⁡(g) Bond ??Δ⁢H (kJ/mol) H−HH−H 432 N≡NN≡N 942 O=OO=O 494 F−FF−F 155 H−NH−N 386 H−OH−O 459 S=OS=O 522 S−OS−O 355
The reaction A(aq) + B(aq) C(aq) + D(aq) has a ΔHrxn = -85 kJ/mol. This reaction is endorthermic or exothermic . If the temperature of the reaction mixture is increased, equilibrium will shift towards the reactans or products. This change will decrease or increase the concentration of the reactants and K will increase or deacrease
4. Energy flows into or out of the system. What two terms describe the direction of energy flow? Write definitions of these terms. Af which is
6. Consider the reaction noitos to 38H HCI + NaOH → NaCl + H,O 2noiteonO ded-teo1 Which you also performed in the experiment Stoichiometry of Two Reactions. Given the information below: Initial temperature °C maa HCl solution 22 NaOH solution 22 o oulsd 10 s Final temperature °C 26.1 madovs o oitoson or os W Temperature Change °C А. Calculate the amount of heat evolved when 15 mL of 1.0M HCl was mixed with 35 mL of 1.0 M NAOH. n 1g ieodl ni agnerto sd es bonlhal d welsto sYT В. Calculate AH° per mole of water formed from this data: Heat evolved Joules kilojoules/mole
2. a. Answer: Complete the ICE table for a solution of nitrous acid, HNO₂(aq), one of the acids associated with acid deposition. ( HNO,(aq) H,O'(aq) NO₂ (aq) 0.045 0.0043 Concentratio n Initial (mol/L) Change (mol/L) Equilibrium (mol/L) dinn to marked

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