Without doing any calculations, determine the sign of AS and ASu for each chemical reaction. In addition, predict under what temperatures (all temperatures, low temperatures, or high temperatures), if any, the reaction is spontaneous. a. 2 Co(g) + O,(g) 2 CO2(g) AHn = -566.0 kJ b. 2 NO,(g) 2 NO(g) + 02(g) AHn = +113.1 kJ c. 2 H,(g) + 0,(g) 2 H,O(g) d. CO.@ C(s) + 02(g) AH. AHxn = +393.5 k] = -483.6 k) "Exn

Without doing any calculations, determine the sign of AS and ASu for each chemical reaction. In addition, predict under what temperatures (all temperatures, low temperatures, or high temperatures), if any, the reaction is spontaneous. a. 2 Co(g) + O,(g) 2 CO2(g) AHn = -566.0 kJ b. 2 NO,(g) 2 NO(g) + 02(g) AHn = +113.1 kJ c. 2 H,(g) + 0,(g) 2 H,O(g) d. CO.@ C(s) + 02(g) AH. AHxn = +393.5 k] = -483.6 k) "Exn

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...

See similar textbooks

Similar questions

For a given reaction, ΔH = +31.15 kJ/mol and ΔS = +126.83 J/K · mol. Above what temperature is the reaction is spontaneous?
Diborane (B2H6) is a highly reactive boron hydride, which was once considered as a possible rocket fuel for the U.S. space program. Calculate ΔH in kJ for the synthesis of diborane from its elements, according to the equation: 2B(s) + 3H2(g) ⟶ B2H6(g) using the following data: a) 2B(s) + 3/2 O2(g) ⟶ B2O3(s) ΔH = -1273 kJ b) B2H6(g) + 3O2(g) ⟶ B2O3(s) + 3H2O(g) ΔH = -2035 kJ c) H2(g) + 1/2 O2(g) ⟶ H2O(l) ΔH = -286 kJ d) H2O(l) ⟶ H2O(g) ΔH = +44 kJ
Methanol is relatively inexpensive to produce. Much consideration has been given to using it as a precursor to other fuels such as methane, which could be obtained by the decomposition of the alcohol. CH3OH(l) -> CH4(g) + 1/2 O2(g) (a) What are the sign and magnitude of the entropy change for the reaction? Does the sign of Δ
Using the values provided in the table below, calculate ΔHr for the following reaction: 2CO2(g) + 4H2O(g) → 2CH3OH(l) + 3O2(g) a. -2158 kJ mol–1 b. 1354 kJ mol–1 c. -402 kJ mol–1 d. -435 kJ mol–1 e. -1354 kJ mol–1
Given the reaction: 4 NH 3(g) + 5 02(g) → 4 NO(G) Determine A G° Will the reaction go spontaneously?
For the following reaction (the detonation of nitroglycerin), is it spontaneous under standard conditions and how can you tell? 4 C4H5N3O9(l) (arrow >) 12 CO2(g) + 10 H2O(g) + 6 N2(g) + O2(g) ΔH = -5678 kJ
2 For the synthesis of ammonia where AG = -33.3 kJ/mole, determine whether the reaction is spontaneous at 25 C with the following pressures: PN, = 1.0 atm, PH, = 3.0 atm, PNH, = 0.020 atm N2(8) + 3H2(g) = 2NH3(g)
Consider the following reaction: C(graphite) + 1/2 O2 (g) → CO(g) Is it spontaneous under standard conditions at 298 K? Answer this question by calculating AS" (system), AS° (surroundings), and AS (universe). (Define reactants and products as the system.) S* (J/mol · K) A¡H° (kJ/mol) at 298 K (kJ/mol) Compound at 298 K C(s, graphite) 5.6 CO(g) 197.674 -110.525 CS2 (g) 237.8 116.7 CCL (e) 214.39 -128.4 Cl2 (g) 223.08 Si(s) 18.82 SİCL, (g) 330.86 -662.75 S(s, rhombic) 32.1 Br2 (e) 152.2 HBr(g) 198.70 -36.29 H2 (g) 130.7 H2O2 (e) 109.6 -187.78 O2 (g) 205.07 O yes O no
If AH = -70.0 kJ and AS = -0.300 kJ/K , the reaction is spontaneous below a certain temperature. Calculate that temperature. %3D Express your answer numerically in kelvins.
For a given reaction, ΔH∘∘= +35.5 kJ/mol and ΔS∘∘= +83.6 J/(K∙∙ mol). In what temperature range is the reaction spontaneous? Assume that ΔH∘∘ and ΔS∘∘ do not vary with temperature.
Which are spontaneous at all temperatures? Choose one or more: 2H,0(g) + SO,(g) - 152.4 J/K 2H,S(g) +30,(g) AH°. rxn = - 1037 kJ, AS°. rxn → 2SO3(g) - 197.8 kJ, ASº. 2SO,(g) +O2(g) AH°. rxn - 187.8 J/K rxn O so,(8) + H,0(1) → H,SO4(1) AH°. rxn - 132.5 kJ, AS° - 169.9 J/K rxn S(g) +O2(8) –→ SO,(g) - 574.0 kJ, AS°, ΔΗ. rxn - 124.6 J/K rxn none of the above
At what temperatures will a reaction be spontaneous if AH = +158 kJ and AS = +411 %3D J/K? O The reaction will never be spontaneous. O The reaction will be spontaneous at any temperature. O All temperatures above 384 K O All temperatures below 384 K