Homework Answers
1)- according to first law of thermodynamics energy can be neither created nor destroyed.it can only be transform from one system to another system.
This law is also known as conservation of energy law.
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Sample 2 1. Write the I law of thermodynamics. 2. What is the exergonic reaction? 3....
1. 2. 3. Select the true statement regarding thermodynamics. C) The △G" of a reaction is...
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2.
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Select the true statement regarding thermodynamics. C) The △G" of a reaction is zero at equilibrium. 0 The standard state for solutes is 1.00 M The standard state for gases is 1 Torr. The ΔG of a reaction is independent of the equilibrium constant A reaction proceeds via the following equation A solution of A and B are allowed to react unti the reaction stops. The final concentrations of the reactants and products are 25 mM A...
PLEASE ANSWER THESE QUESTIONS What is the molar reaction enthalpy for the reaction below: NgH4(I) + CH4 (1) #CH2O(g) + N...
PLEASE ANSWER THESE
QUESTIONS
What is the molar reaction enthalpy for the reaction below: NgH4(I) + CH4 (1) #CH2O(g) + Ng(g) + 3Hg(g) given the following thermodynamic data? 2NH3(g) + N2H4(1) + H2(g) A,Hm = 22.5 kJ mol-1 2NH3(g) + N2(g) + 3H2(9) A,Hm = 57.5 kJ mol-1 CH2O(g) + H2(g) + CHAO(0) A,Hm = 81.2 kJ mol-1 0 -11.5 kJ mol-1 0 -32.8 kJ mol-1 0 -46.2 kJ mol-1 O-59.7 kJ mol? A particular reaction has a standard molar...
Please solve questions 1, 2 and 3 At what temperatures is the reaction below spontaneous? 2...
Please solve questions 1, 2 and 3
At what temperatures is the reaction below spontaneous? 2 H2(g) + O2(g) + 2 H2O(l) Select one: O a. at T > ~1750 K O b. at T < ~1750 K O c. at T > ~1.75 K. d. at T < ~ 1.75 K O e. The reaction is spontaneous at all temperatures. Which one of the following thermodynamic quantities is not a state function? Select one: O a. entropy b. Gibbs...
Question 4 (a) 2-Pentanone undergoes photolysis reaction giving propanone and ethene. (i) Write a...
Question 4 (a) 2-Pentanone undergoes photolysis reaction giving propanone and ethene. (i) Write an equation for the photolysis reaction using display formulae (i) Suggest a suitable transition state of the reaction. Explain your reasonings (ii) Draw the energy profile of the reaction showing the activation energy (kJ/mol) and enthalpy change (k]/mol), given: Electronic energy (Hartree) BLYP/3-21G/gas phase 2-Pentanone-271.793501 ropanone -271.697234 Ethene 271.737789 [1 Hartree- 2625.5 kJ/mol] (iv) Describe how the chalcogen effect may be studied for this reaction. 2, 3,...
(2 points each a-f) The data below were collected for the following reaction: 2 NO2 (g)...
(2 points each a-f) The data below were collected for the following reaction: 2 NO2 (g) Cl2 (g) >2 NO2CI (g) Initial rate (M/s) [NO2] (M) [CI2 (M) 0.051 0.200 0.100 0.400 0.100 0.103 0.105 0.400 0.200 0.800 0.400 0.207 a. Calculate the order of the reaction with respect to NO2 (). b. Calculate the order of the reaction with respect to Cl2 (/). Write the Rate Law expression including the correct order of reaction for each reactant. c. d....
1.The spontaneity of system or a biochemical reaction can be determined by: A) Enthalpy alone B)...
1.The spontaneity of system or a biochemical reaction can be determined by: A) Enthalpy alone B) Entropy alone C) Gibbs Free energy D) Temperature and heat 2.A reaction in equilibrium where both forward and reverse reactions are proceeding equally, will have a DELTA G value of: A) Positive B) Zero C) Negative 3.A reaction was originally endergonic, but became exergonic after reducing the temperature. Therefore, this reaction originally had __________ deltaH and a ______ delta S. A) small positive, large...
Hess' Law Enthalpy change for the decomposition of ammonium chloride 1. Write out the reaction NH4Cl(s)...
Hess' Law Enthalpy change for the decomposition of ammonium chloride 1. Write out the reaction NH4Cl(s) -> NH3 (g) + HCl(g) as a series of steps which include the reactions observed in Procedures 2 and 3. Use the known enthalpies for the change of state of NH3 and Hcl, given below. NH3 (g) -> NH3 (aq) (?H = -34,640 J/mol) HCl (g) -> HCl (aq) (?H = -75,140 J/mol) Be sure to show how the reaction steps must proceed so...
1. Which statement is incorrect?a.The Law of Conservation of Energy is another statement of...
1. Which statement is incorrect?a.The Law of Conservation of Energy is another statement of the
First Law of Thermodynamics.b.Energy is the capacity to do work or to transfer heat.c.Potential energy is the energy that a system possesses by virtue
of its position or composition.d.Kinetic energy is the energy of motion.e.A process that absorbs energy from its surroundings is called
exothermic.____ 2. Which term is not
correctly matched?a.thermodynamic state - conditions specifying the properties of a
systemb.state function - property dependent...
3 seperate questions i have been having trouble with Suppose you are investigating the reaction: M(s) + 2 HCl(aq)...
3 seperate questions i have been having trouble with
Suppose you are investigating the reaction: M(s) + 2 HCl(aq) - MC12(aq) + H2(g). You weigh out a 0.243 gram piece of metal and combine it with 63.1 mL of 1.00 M HCl in a coffee-cup calorimeter. If the molar mass of the metal is 46.62 g/mol, and you measure that the reaction absorbed 105 J of heat, what is the enthalpy of this reaction in kJ per mole of limiting...
You don't have to write detailed answers, I just need the correct choice Thank you! 15....
You don't have to write detailed answers, I just need the
correct choice
Thank you!
15. Which statement is true if the reaction shown is spontaneous under standard conditions as written? Zn(s) + Cu2+(aq) -- Zn2+(aq) + Cu(s) (A) K is smaller than 1, 4Gº is positive, and Eº is negative. (B) K is smaller than 1, 4Gº is negative, and E° is positive. (C) K is larger than 1, 4Gº is negative, and E° is positive. (D) K is...
1.
2.
3.
Select the true statement regarding thermodynamics. C) The △G" of a reaction is zero at equilibrium. 0 The standard state for solutes is 1.00 M The standard state for gases is 1 Torr. The ΔG of a reaction is independent of the equilibrium constant A reaction proceeds via the following equation A solution of A and B are allowed to react unti the reaction stops. The final concentrations of the reactants and products are 25 mM A...
PLEASE ANSWER THESE
QUESTIONS
What is the molar reaction enthalpy for the reaction below: NgH4(I) + CH4 (1) #CH2O(g) + Ng(g) + 3Hg(g) given the following thermodynamic data? 2NH3(g) + N2H4(1) + H2(g) A,Hm = 22.5 kJ mol-1 2NH3(g) + N2(g) + 3H2(9) A,Hm = 57.5 kJ mol-1 CH2O(g) + H2(g) + CHAO(0) A,Hm = 81.2 kJ mol-1 0 -11.5 kJ mol-1 0 -32.8 kJ mol-1 0 -46.2 kJ mol-1 O-59.7 kJ mol? A particular reaction has a standard molar...
Please solve questions 1, 2 and 3
At what temperatures is the reaction below spontaneous? 2 H2(g) + O2(g) + 2 H2O(l) Select one: O a. at T > ~1750 K O b. at T < ~1750 K O c. at T > ~1.75 K. d. at T < ~ 1.75 K O e. The reaction is spontaneous at all temperatures. Which one of the following thermodynamic quantities is not a state function? Select one: O a. entropy b. Gibbs...
Question 4 (a) 2-Pentanone undergoes photolysis reaction giving propanone and ethene. (i) Write an equation for the photolysis reaction using display formulae (i) Suggest a suitable transition state of the reaction. Explain your reasonings (ii) Draw the energy profile of the reaction showing the activation energy (kJ/mol) and enthalpy change (k]/mol), given: Electronic energy (Hartree) BLYP/3-21G/gas phase 2-Pentanone-271.793501 ropanone -271.697234 Ethene 271.737789 [1 Hartree- 2625.5 kJ/mol] (iv) Describe how the chalcogen effect may be studied for this reaction. 2, 3,...
(2 points each a-f) The data below were collected for the following reaction: 2 NO2 (g) Cl2 (g) >2 NO2CI (g) Initial rate (M/s) [NO2] (M) [CI2 (M) 0.051 0.200 0.100 0.400 0.100 0.103 0.105 0.400 0.200 0.800 0.400 0.207 a. Calculate the order of the reaction with respect to NO2 (). b. Calculate the order of the reaction with respect to Cl2 (/). Write the Rate Law expression including the correct order of reaction for each reactant. c. d....
1. Which statement is incorrect?a.The Law of Conservation of Energy is another statement of the
First Law of Thermodynamics.b.Energy is the capacity to do work or to transfer heat.c.Potential energy is the energy that a system possesses by virtue
of its position or composition.d.Kinetic energy is the energy of motion.e.A process that absorbs energy from its surroundings is called
exothermic.____ 2. Which term is not
correctly matched?a.thermodynamic state - conditions specifying the properties of a
systemb.state function - property dependent...
3 seperate questions i have been having trouble with
Suppose you are investigating the reaction: M(s) + 2 HCl(aq) - MC12(aq) + H2(g). You weigh out a 0.243 gram piece of metal and combine it with 63.1 mL of 1.00 M HCl in a coffee-cup calorimeter. If the molar mass of the metal is 46.62 g/mol, and you measure that the reaction absorbed 105 J of heat, what is the enthalpy of this reaction in kJ per mole of limiting...
You don't have to write detailed answers, I just need the
correct choice
Thank you!
15. Which statement is true if the reaction shown is spontaneous under standard conditions as written? Zn(s) + Cu2+(aq) -- Zn2+(aq) + Cu(s) (A) K is smaller than 1, 4Gº is positive, and Eº is negative. (B) K is smaller than 1, 4Gº is negative, and E° is positive. (C) K is larger than 1, 4Gº is negative, and E° is positive. (D) K is...
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