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For a process at constant temperature and pressure, if DeltaG is positive, the process is,if...
Which of the following would be true for a reaction that has a positive AS and...
Which of the following would be true for a reaction that has a positive AS and a positive AH? Select one: a. It is not possible to determine without more information. b. This reaction will be nonspontaneous only at high temperatures. c. This reaction will be spontaneous only at high temperatures. d. This reaction will be spontaneous at all temperatures. e. This reaction will be nonspontaneous at all temperatures. You prepared a galvanic cell using Pb(s) | Pb+2(aq) || Hg'...
Need chemistry help with 9 & 10 For the reaction C(s) + H_O(g) rightarrow CO(g) +...
Need chemistry help with 9 & 10
For the reaction C(s) + H_O(g) rightarrow CO(g) + H_2(g) DeltaHdegree = 131.3 kJ/mol and DeltaSdegree = 133.6 J/K middot mol at 298 K. At temperatures greater than degreeC this reaction is spontaneous under standard conditions. A) 983 B) 325 C) 273 D) 710 E) 552 10. A mole of yellow photons of wavelength 527 nm has kj of energy. A) 227 B) 2.74 times 10-^19 C) 4.56 times 10-^46 D) 6.05 times...
Can you please solve and provide the answer please c. 10. Calculate the standard cell potential...
Can
you please solve and provide the answer please
c. 10. Calculate the standard cell potential El using the given given data for the electrochemical cell constructed using the following reaction: Mn (s) + Ca**(aq) → Mnº(aq) + Ca(s). Half-reaction Standard reduction potential Mn* (aq) +2 e Mn(s) -1.185 V ca" (aq) +2 e Cd(s) -0.403 v a. +1.588 V d. +1.967 V b. +0.782 v e. -0.782 v -1.588 v 11. What is the value of the equilibrium constant...
30) At constant pressure and temperature, which statement is true? A) All reactions for which k...
30) At constant pressure and temperature, which statement is true? A) All reactions for which k < 1 are spontaneous B) All reactions for which AG are spontaneous C) All reactions for which AH<0 are spontaneous. D) All reactions for which AS <0 are spontaneous 11) 11) Consider the galvanic cell, Pb(s) IP20) Cu2+(a) Cu(s). Which one of the following changes to the cell would cause the cell potential to increase (ie, become more positive)? A) increase the mass of...
Free Energy: Equilibrium Constant and Temperature Effects CHM1046 GEN CHEM WONLINE 619434 nergy: Equilibrium Consta...
Free Energy: Equilibrium Constant and Temperature Effects CHM1046 GEN CHEM WONLINE 619434 nergy: Equilibrium Constant and lemperature Effects Explain How Spontaneity is Affected by Temperature Question Consider the process below. How does the spontaneity of the process depend on temperature? 2SnO (s) 2SnO(s)+02(g) 584 kl mori, dS-220 J K-1 mol-1 ΔΗ Select the correct answer below O nonspontaneous at all temperatures spontaneous at all temperatures spontaneous above a certain temperature and nonspontaneous below spontaneous below a certain temperature and nonspontaneous...
Chemguide - questions REDOX EQUATIONS 1. Use each of the following pairs of electron-half-equations to work...
Chemguide - questions REDOX EQUATIONS 1. Use each of the following pairs of electron-half-equations to work out the ionic equation for the reaction concerned. a) The reaction between chlorine gas and bromide ions: 2CH Cl₂ + 20 2Br - Brı + 2e b) The reaction between iron(II) ions and acidified potassium manganate(VII) solution: Fe2+ - Fe3+ + e Mnog + 8H+ + 5e - Mn2+ + 4H20 c) The reaction between ethanol and acidified potassium dichromate(VI) solution to give ethanal:...
need answers for all questions Question 35 (3 points) (35) For galvanic cell: (-) Cr/ Cr3+...
need answers for all questions
Question 35 (3 points) (35) For galvanic cell: (-) Cr/ Cr3+ (aq) // Cu2+ (aq) / Cu (+), the correct half reactions are 0 (a) Cr3+ (a) Cr3+ + 3e → Crat (-) electrode; Cu+ 2e → Cu2+ at (+) electrode (b) Cr - 3e → Cr3+ at (-) electrode; Cu2+ + 2e → 2 Cu at (+) electrode Occ) cr (c) Cr + 3e → Cr3+ at (-) electrode; Cu2+ - 2e → Cu...
For a process, ΔS is positive and ΔH is negative. This process: Select one: a. is...
For a process, ΔS is positive and ΔH is negative. This process: Select one: a. is spontaneous at very high temperatures b. is spontaneous at all temperatures c. is not spontaneous at any temperature d. is at equilibrium e. is spontaneous at very low temperatures
36.(a) Choose all of the statements from below which correctly describe issues pertaining to the relationship...
36.(a) Choose all of the statements from below which
correctly describe issues pertaining to the
relationship between the emf of a reaction and its Gibbs free
energy change.
The Gibbs free energy change and emf values of a reaction have
opposite algebraic signs (+ vs. -).
A Gibbs free energy change involves moles of substances whereas an
emf involves coulombs of electrons.
Electron stoichiometry must be used to interconvert a Gibbs free
energy change and a reaction emf.
A coulomb...
Part 1.) Choose all of the statements from below which correctly describe issues pertaining to the...
Part 1.)
Choose all of the statements from below which
correctly describe issues pertaining to the
relationship between the emf of a reaction and its Gibbs free
energy change.
1. The Gibbs free energy change and emf values of a reaction
have opposite algebraic signs (+ vs. -).
2. A mole of particles is more particles than a coulomb of
particles.
3. A spontaneous reaction has a positive Gibbs free energy change
and a negative emf.
4. A Gibbs free...
Which of the following would be true for a reaction that has a positive AS and a positive AH? Select one: a. It is not possible to determine without more information. b. This reaction will be nonspontaneous only at high temperatures. c. This reaction will be spontaneous only at high temperatures. d. This reaction will be spontaneous at all temperatures. e. This reaction will be nonspontaneous at all temperatures. You prepared a galvanic cell using Pb(s) | Pb+2(aq) || Hg'...
Need chemistry help with 9 & 10
For the reaction C(s) + H_O(g) rightarrow CO(g) + H_2(g) DeltaHdegree = 131.3 kJ/mol and DeltaSdegree = 133.6 J/K middot mol at 298 K. At temperatures greater than degreeC this reaction is spontaneous under standard conditions. A) 983 B) 325 C) 273 D) 710 E) 552 10. A mole of yellow photons of wavelength 527 nm has kj of energy. A) 227 B) 2.74 times 10-^19 C) 4.56 times 10-^46 D) 6.05 times...
Can
you please solve and provide the answer please
c. 10. Calculate the standard cell potential El using the given given data for the electrochemical cell constructed using the following reaction: Mn (s) + Ca**(aq) → Mnº(aq) + Ca(s). Half-reaction Standard reduction potential Mn* (aq) +2 e Mn(s) -1.185 V ca" (aq) +2 e Cd(s) -0.403 v a. +1.588 V d. +1.967 V b. +0.782 v e. -0.782 v -1.588 v 11. What is the value of the equilibrium constant...
30) At constant pressure and temperature, which statement is true? A) All reactions for which k < 1 are spontaneous B) All reactions for which AG are spontaneous C) All reactions for which AH<0 are spontaneous. D) All reactions for which AS <0 are spontaneous 11) 11) Consider the galvanic cell, Pb(s) IP20) Cu2+(a) Cu(s). Which one of the following changes to the cell would cause the cell potential to increase (ie, become more positive)? A) increase the mass of...
Free Energy: Equilibrium Constant and Temperature Effects CHM1046 GEN CHEM WONLINE 619434 nergy: Equilibrium Constant and lemperature Effects Explain How Spontaneity is Affected by Temperature Question Consider the process below. How does the spontaneity of the process depend on temperature? 2SnO (s) 2SnO(s)+02(g) 584 kl mori, dS-220 J K-1 mol-1 ΔΗ Select the correct answer below O nonspontaneous at all temperatures spontaneous at all temperatures spontaneous above a certain temperature and nonspontaneous below spontaneous below a certain temperature and nonspontaneous...
Chemguide - questions REDOX EQUATIONS 1. Use each of the following pairs of electron-half-equations to work out the ionic equation for the reaction concerned. a) The reaction between chlorine gas and bromide ions: 2CH Cl₂ + 20 2Br - Brı + 2e b) The reaction between iron(II) ions and acidified potassium manganate(VII) solution: Fe2+ - Fe3+ + e Mnog + 8H+ + 5e - Mn2+ + 4H20 c) The reaction between ethanol and acidified potassium dichromate(VI) solution to give ethanal:...
need answers for all questions
Question 35 (3 points) (35) For galvanic cell: (-) Cr/ Cr3+ (aq) // Cu2+ (aq) / Cu (+), the correct half reactions are 0 (a) Cr3+ (a) Cr3+ + 3e → Crat (-) electrode; Cu+ 2e → Cu2+ at (+) electrode (b) Cr - 3e → Cr3+ at (-) electrode; Cu2+ + 2e → 2 Cu at (+) electrode Occ) cr (c) Cr + 3e → Cr3+ at (-) electrode; Cu2+ - 2e → Cu...
36.(a) Choose all of the statements from below which
correctly describe issues pertaining to the
relationship between the emf of a reaction and its Gibbs free
energy change.
The Gibbs free energy change and emf values of a reaction have
opposite algebraic signs (+ vs. -).
A Gibbs free energy change involves moles of substances whereas an
emf involves coulombs of electrons.
Electron stoichiometry must be used to interconvert a Gibbs free
energy change and a reaction emf.
A coulomb...
Part 1.)
Choose all of the statements from below which
correctly describe issues pertaining to the
relationship between the emf of a reaction and its Gibbs free
energy change.
1. The Gibbs free energy change and emf values of a reaction
have opposite algebraic signs (+ vs. -).
2. A mole of particles is more particles than a coulomb of
particles.
3. A spontaneous reaction has a positive Gibbs free energy change
and a negative emf.
4. A Gibbs free...
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