zubni ni baru es lo nosible yd [5] The following process is nonspontaneous at low temperatures....
Under which of the following conditions is a process spontaneous at high temperatures and nonspontaneous at low temperatures? Select the correct answer below: O AH and AS are both positive O AH and AS are both negative O ΔH is positive and Δ.S is negative O AH is negative and AS is positive
IF ÄH and ÄS are both negative for a reaction, then the reaction is: a. nonspontaneous at low temperatures and spontaneous at high temperatures. b. spontaneous at low temperatures and nonspontaneous at high temperatures. C. spontaneous at all temperatures. d. nonspontaneous at all temperatures. e. none of the choices given above Suppose that AH° = +95.1 kJ and AS° =-0.192 kJ/K for a chemical reaction. What is AG at 600 K? a. +20.1 kJ b.-20.1 kJ c. +152.3k) d.+210.3 kJ...
A process has a negative AH and a positive AS. Which of the following is true? the process is spontaneous at all temperatures the process isnon-spontaneous at all temperatures the process is spontaneous at high temperatures the process is spontaneous at low temperatures For a reaction in which AG is large and positive, which is true? AG is large and positive AG is large and negative Ο ΔG = ΔG none of these can be assumed
State whether following reactions are spontaneous at all temperatures, low temperatures, high temperatures or not spontaneous at any temperatures. (a) N2(g) + 3 F2(g) + 2 NF3(g) AH = -249 kJ (b) N()+ 3Cl2(g) → 2 NC13(g) AH = 460 kJ (e) NF4(8) 2 NF2(g) AH = 85 kJ
Question 5 1 pts Predict under what temperatures (all temperatures, low temperatures, or high temperatures), if any, the reaction will be spontaneous. A. 4NO(g)+6H2O(g) 4NH3(g)+502(g) AHrxn=+906kJ [Select] B. 2N2O(g)+O2(g)-4NO(g) AH rxn=+197.1kJ [Select] C. C3H3(g)+502(g)-3CO2(g)+4H2O(g) AH rxn=-2044kJ Spontaneous at all temperatura A
14. For the following reactions, predict whether they will tend to be spontaneous at high, low, all temperatures, or non-spontaneous at any temperature (10 points) a) An "instant ice-pack" type of reaction where AS > 0, and AH > 0 b) 3A (1) ► B(s) + C(1) + D(g), AH < 0 c) 2A(s) → B(g) + C(1), AH > 0
Tedict and explain whether the follo ind explain whether the following reactions will be nonspontaneous at all temperatures or spontaneous at all, low, or high temperatures. (a) 2POCI(8) ► 2PC(s) + O2(8) Air - 572 3; AS - 179 3K (b) 302(g) → 203(g) AF - 286 kJ; AS = -1373/ (c) 4NH3(g) + 502(g) → 4NO(g) + 6H2O() AH = -1274 kJ; AS = 180 J/K (d) 2PbS(s) + 302(g) → 2PbO(s) + 2502(8) AH = -844 kJ; AS...
8. For the following reaction, CC2(s) + 2H2O(l) + Ca(OH)2(s) + C2H2(g) which is spontaneous at all temperatures, one would predict that a. AG is positive for all temperatures. d. AH is - and AS is for the reaction. b. AH is + and AS is for the reaction. e. AH is + and AS' is- for the reaction. c. AH is - and AS is for the reaction. 9. Calculate the standard absolute entropy, in J/mol K. of Mg:...
Chapter 18 Thermodynamics Homework 1.Predict the sign of AS for each process: a) The boiling of water b)2HgO(s)-2Hg(I) + 02(s) c) CaCO, (s)CaO(s)+ CO (g) 2. Is the following process spontaneous or nonspontaneous at a given temperature? NaNO,(s) ->NaNO,(aq) 3. If a reaction has ΔS < 0 and ΔΗ < 0 will the reaction always be spontaneous, spontaneous at low T, spontaneous at high T, or never spontaneous? 4.Consider this reaction: Calculate ΔG at 25 °C and determine whether the...
2843 21. For the reaction in the previous problem, what is AG? Faraday's Constant F - 485 J/(V-mol 190 WOD - 1140 +11402 4 - 2842 22. A solution contains 0.273 M NH CHaq). What concentration of NH,/>) must be added to make a buffer of pH 9.40 0,193 M 0.386 M 4 0.0410 M 4 0317M 3.17M 23. In an aqueous solution, if pou - 8%, what is [HT? pl рон JOH1 88 7 16,3x10* & 1.6*10*M 63.5 x...