he decomposition of ammonium chloride to form ammonia and hydrogen chloride occurs according to the following reaction: a) Predict the sign of the entropy change, AS, for this reaction. Justify your answer. b) The value of AG° for the reaction is negative at high temperatures but positive at low temperatures. Explain. NH,Cla→ NH + HCl@ AH= 176 kJ

he decomposition of ammonium chloride to form ammonia and hydrogen chloride occurs according to the following reaction: a) Predict the sign of the entropy change, AS, for this reaction. Justify your answer. b) The value of AG° for the reaction is negative at high temperatures but positive at low temperatures. Explain. NH,Cla→ NH + HCl@ AH= 176 kJ

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

Predict whether AS for each reaction would be greater than zero, less than zero, or too close to zero to decide. Clear All H2(g) + F2(g)- →2HF(g) →2NO(g) + Br2(g) 2NOBr(g)- AS > 0 CO2(g) + H2(g)- + H20(g) →CO(g) AS < 0 2CO2(g) + 5H2(g)- C,H2(g) + 4H,0(g) too close to decide 2H2021)2H,0(1) + 02(g)
calculate ΔS rxn (standrad entropy) and Δ Ssurr for the reactions and determine if each is spontaneous at 25 degrees celsius.
Give typed full explanation
1. Consider the following combustion reaction: C3H8(g) + 5O2(g) --> 3CO2(g) + 4H2O(g) ∆Hrxn = -2044 kJ (a) Determine the sign of the entropy change for the above reaction. (b) Calculate the entropy change for the above reaction at 25°C. Does this match your predicted sign from (a)?
14) Predict the sign of AS for each process. A) H20G) → H2O(1) B) Solid carbon dioxide sublimes C) 2 N20(g) → 2 N2g) + O2(g)
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
Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy AS. Note: if you have not been given enough information to decide a sign, select the "unknown" option. reaction A C observations This reaction is slower below 18. °C than above. This reaction is spontaneous only above 97. °C. This reaction is always spontaneous, but proceeds faster at temperatures above 72. °C. AH is AS is conclusions AH is AS is AH is AS is ✓ (pick one) positive negative unknown (pick one) (pick one) (pick one) (pick one)
Use the data given here to calculate the values of AGan at 25 °C for the Compound AG; (kJ/mol) reaction described by the equation A +387.7 В +596.8 A + B =C +402.0 AGAN kJ
Determine the sign of AS for the following process. Liquid water at room temperature is placed in a freezer H2O (1) → H2O (s) A. O positive B. O negative
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
Predict the sign of the entropy change of the system for each of the following reactions. (Answer it please, I won't mind if the solution is incomplete)