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view Use these responses for the next 3 questions: A.+AH B.-AH C.-AG D. +AG E. +AS F.-AS Which represents an exothe...
(9) A spontaneous process has the change of free energy (a) AG > 0 (b) AG <0 (c) AG = 0 (d) AH >0 and AS <0 (10) A chemical reaction has AH = 10 kJ, AS = 50 J/K at temperature T = 300 K, the reaction AG = (a) 5000 (b)-5000 (c) 10000 (d) 50 (11) For reaction : Ag (s) + 1/2 Cl2 (g) = Agt (aq) + CI+ (aq), the standard free energy of formation: AGE"...
7. Use the given AH, Sº and AGºr values to calculate the AG at 25°C for the following reaction two different ways. First with the AHºnx and AS°n to get AGºnn and then with AGº's to get AGºra. Compare your results. CS2(g) + 2H2O + 2O2(g) – CH4(g) + 2SO4(g) AH° (kJ/mol) 117 -286 0 -396 Sº (J/mol-K) 238 70. 205 186 257 AGⓇ (kJ/mol) 67 -237 0 -51 -371 -75 For each of the following redox reactions, a) Write...
Test IV (Electrochemistry) 2018 Fall What is the oxidation number for the Which of the following is true concerning a galvanic cell? (A) Oxidation occurs at the anode and is 1. 8. underlined manganese in Mn04 (A)-8 (8)-2 (C)-1 (D)4 (E) 7 where anions move towards where anions move towards where cations move towards where anions move towards where anions move towards 2. When balancing the below half-reaction in acidic solutionelectrons are added to the (B) Oxidation occurs at the...
estion 17 of 25 > Given the information A+B 2D C D AH' = -629.4 kJ AH = 464.0 kJ AS = 327.0 J/K AS' = -147.0 J/K calculate AG at 298 K for the reaction A+B - 20 1 AG" = kJ 30 A w 09 S For a particular reaction, AH = -111.4 kJ/mol and AS = -25.0 J/(molK). Calculate AG for this reaction at 298 K. AG = -14.83 KJ/mo Incorrect What can be said about the...
the following reaction occurring in an electrochemical cell at 25°C. (The equation is balanced.) fone 2 pts) a. Use the standard half-cell potentials listed below to calculate the standard cell potential (Eºcell) for 3 Sn(s) + 2 Fe* (aq) - 3 Sn2+ (aq) + 2 Fe(s) Sn 2(aq) + 2 e -Sn (s) E = -0.14 V Fe3+ (aq) + 3 e Fe(s) E° = -0.036 V A) -0.176 V B)-0.104 V C) +0.104 V D) +0.176 V b. Write...
(9) A spontaneous process has the change of free energy (a) AG>0 (c) AG = 0 (b) AG <O (d) AH>0 and AS <O (10) A chemical reaction has AH = 10 kJ. AS = 50 J/K at temperature T = 300 K. the reaction AG = J. (a) 5000 (b) -5000 (c) 10000 (d) 50 (11) For reaction: Ag (s) + 2 Cl2 (g) Ag° (aq) +CI (aq), the standard free energy of formation: AGf° (Ag*) = 77.1 kJ/mol,...
20. rBr 10,Br (in hasic solution) Final equation: 21 Predict the boiling point (in K) of cyclohexane using this data. (clearly show your work) Cyclohexane at its boiling point is described by the reactionCH..8 CHER-123 kJ/mol +298 J/mol-K Answer the next 5 questions with the following information: A voltaic cell is made with the metals Pb & Ag and the solutions Pb(NO)h& AgNO, at standard conditions 22. Write the half-steps for Oxidation: Reduction: 23. Write the balanced net ionic reaction:...
5. The total entropy of a system and its surroundings always increases for a spontaneous process is a statement bt a) the third law of thermodynamics. b) the second law of thermodynamics c) the law of constant composition d) the law of conservation of matter e) the first law of thermodynamics 6. Which of the following is a redox reaction? 7. A certain electrochemical cell has for its cell reaction Zn Hgo occurring at the anode? Zno Hg Which is...
a) 4.9 x 10'M b)24x10 M c)5.8x 1010 M )1.2 x 10 M 19. Which one of the following compounds will have the lowest molar solubility in pur water? b) CuS, Ksp 1.27x103 d) ZnS, Ksp = 1.6 x 10-24 a) PbS, Ksp 9.04 x 102 e) Al(OH)s, Ksp 3 x 1034 What is the molar solubility, i.e. [Fe , in a saturated aqueous solution of 20. Fe(OH)20) Fe(OH(s)Fe2+(aa) + 201H (ag), Ksp 4.87 x 101" a) 2.44 x 1017...
A critical reaction in the production of energy to do work or drive chemical reactions in biological systems is the hydrolysis of adenosine triphosphate, ATP, to adenosine diphosphate, ADP, as described by the reaction ATP(aq) + H,O(1) ADP(aq) + HPO- (aq) for which AG = -30.5 kJ/mol at 37.0 °C and pH 7.0. Calculate the value of AG xn in a biological cell in which [ATP] = 5.0 mm, (ADP) = 0.10 mM, and (HPO 1 - 5.0 mM. AG...