We consider two phases of solid carbon: diamond and graphite, with S0diamond= 2.44 J/(K ∙ mol)...
We consider two phases of solid carbon: diamond and graphite, with S0diamond= 2.44 J/(K ∙ mol) and S0 graphite = 2.3 ∙ S0diamond . Which of the two carbon modifications is more stable if we establish a thermal equilibrium between them in an isolated system?
Homework Answers
As S0 for diamond is 2.44 which is greater than S0 for graphite, hence diamond will be more stable.
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We consider two phases of solid carbon: diamond and graphite,
with S0diamond= 2.44 J/(K ∙ mol)...
What is the standard Gibbs free energy for the transformation of diamond to graphite at 298 K? Cdiamond?Cgraphite Exp...
What is the standard Gibbs free energy for the transformation of diamond to graphite at 298 K? Cdiamond?Cgraphite Express your answer to three significant figures and include the appropriate units. Gibbs free energy is a measure of the spontaneity of a chemical reaction. It is the chemical potential for a reaction, which is minimized at equilibrium. It is defined as G=H?TS Elemental carbon usually exists in one of two forms: graphite or diamond. It is generally believed that diamonds last...
1.) The value of S° for the oxidation of carbon to carbon dioxide, is __________ J/K...
1.) The value of
S° for the oxidation of carbon to carbon dioxide,
is __________ J/K
mol. The combustion of carbon, as in charcoal briquettes, in the
presence of abundant oxygen produces carbon dioxide.
2.)The value of
S° for the reaction
is __________ J/K.
3.)The value of
S° for the decomposition of gaseous sulfur dioxide to solid
elemental sulfur and gaseous oxygen,
is __________ J/K
mol.
Use the table below to answer the questions that follow. Thermodynamic Quantities for Selected...
1. Consider a process at 286 K with ΔH = -72.5 kJ/mol and ΔS = -96.8...
1. Consider a process at 286 K with ΔH = -72.5 kJ/mol and ΔS = -96.8 J/K mol Which of the following is true? ΔG = -44.8 kJ/mol and the process will not be spontaneous ΔG = +39.4 kJ/mol and the process will be spontaneous ΔG = -44.8 kJ/mol and the process will be spontaneous ΔG = -19.1 kJ/mol and the process will not be spontaneous ΔG = +39.4 kJ/mol and the process will not be spontaneous 2. Consider a...
314 J/mol K 78.4+ 273,15 All work must be show to receive credit. Remember, significant figures...
314 J/mol K 78.4+ 273,15 All work must be show to receive credit. Remember, significant figures are important! P_TAH P, -AH / T,+1, IT R 0,0821 L atm/mol K = 8.314 J/mol K "P, RT TI? 1. (4 points) Ethanol has a heat of vaporization of 38 56 kJ/mol and a normal boiling point of 78.4°C. a. What is the vapor pressure of ethanol at 250°C? In P2 - Nroup CT-T2 ) 25.0+ 273. P2L n =-A 38.56 kJ last...
Problem 5.28. Calcium carbonate, CaCO3, has two common crystae forms, calcite and aragonite. Thermodynamic data for these phases can be found at the back of this book (a) Which is stable at earth...
Problem 5.28. Calcium carbonate, CaCO3, has two common crystae forms, calcite and aragonite. Thermodynamic data for these phases can be found at the back of this book (a) Which is stable at earth's surface, calcite or aragonite? (b) Calculate the pressure (still at room temperature) at which the other phase should become stable. All of the values in this table are for one mole of material at 298 K and 1 bar. Following the chemical formula is the form of...
QUESTION 5 Consider the formation of solid silver chloride from aqueous silver and chloride ions. Given...
QUESTION 5
Consider the formation of solid silver chloride from aqueous
silver and chloride ions.
Given the following table of thermodynamic data at 298 K:
The value of K for the reaction at 25 °C is ________.
a)
1.8 × 104
b)
3.7 × 1010
c)
1.9 × 10-10
d)
810
e)
5.3 × 109
QUESTION 6
Consider the reaction:
NH 3 (g) + HCl (g) → NH 4Cl (s)
Given the following table of thermodynamic data,
...
15) Determine the molar solubility of FeCl, in pure water. K A) 0.228 M B ) 0.0301 M C) 0.311 M for FeCl, -2.45 x 1...
15) Determine the molar solubility of FeCl, in pure water. K A) 0.228 M B ) 0.0301 M C) 0.311 M for FeCl, -2.45 x 10 D ) 0.174 M 15 E) 2.45 * 10M 16) 16) Which of the following statements is true? A) Kris related to the formation of complexes B) K is related to acid dissociation C) K, is related to the solubility of a solid ionic species D) Khis related to base dissociation E) K is...
with explanations thanks A4 The molecular dipole vector is the sum of bond polarities and indicates the direction and...
with explanations thanks
A4 The molecular dipole vector is the sum of bond polarities and indicates the direction and extent of polarity on a molecule, the vector arrow points from the net negative domain towards the net positive domain. Identify which ONE of the following molecules has the molecule polarity correctly indicated by the dipole vector H H H H H H H H H H H (A) (B) (C) H H H H H (D) (E) A8 When a...
Experiment 8 Conservation of Mass kussion: action: 170 Mole wt. g/mol Aqual the combined masses of...
Experiment 8 Conservation of Mass kussion: action: 170 Mole wt. g/mol Aqual the combined masses of all the reactants that were initially present. Furthermore, we fter any chemical reaction, the total mass of new products and any left over reactants) will a predict the mass of each product that will be formed if we know the molecular weight or the formula (from which we can predict the molecular weight). As an example, consider the dissolve the two substances in water,...
please correct me If I did anything wrong. im very confused on this. • Determining k...
please correct me If I did anything wrong. im very confused on
this.
• Determining k in Beer's Law 2. Determining the equilibrium constant Test Tube No. Absorbance Test Tube No. Absorbance 0,060 이79 0.253 0319 0.400 0.120 0.268 0.361 0.461 0.695 Post Laboratory Questions 1. Complete the following table and calculate k-value for the Beer's Law. All concentrations should be in M. [Fe(SCN)2) Absorbance CA Test Tube No. Diluted Fe(NO3)2 (mL) 0 . 2 3 4 s Reference 1.0...
1.) The value of
S° for the oxidation of carbon to carbon dioxide,
is __________ J/K
mol. The combustion of carbon, as in charcoal briquettes, in the
presence of abundant oxygen produces carbon dioxide.
2.)The value of
S° for the reaction
is __________ J/K.
3.)The value of
S° for the decomposition of gaseous sulfur dioxide to solid
elemental sulfur and gaseous oxygen,
is __________ J/K
mol.
Use the table below to answer the questions that follow. Thermodynamic Quantities for Selected...
314 J/mol K 78.4+ 273,15 All work must be show to receive credit. Remember, significant figures are important! P_TAH P, -AH / T,+1, IT R 0,0821 L atm/mol K = 8.314 J/mol K "P, RT TI? 1. (4 points) Ethanol has a heat of vaporization of 38 56 kJ/mol and a normal boiling point of 78.4°C. a. What is the vapor pressure of ethanol at 250°C? In P2 - Nroup CT-T2 ) 25.0+ 273. P2L n =-A 38.56 kJ last...
Problem 5.28. Calcium carbonate, CaCO3, has two common crystae forms, calcite and aragonite. Thermodynamic data for these phases can be found at the back of this book (a) Which is stable at earth's surface, calcite or aragonite? (b) Calculate the pressure (still at room temperature) at which the other phase should become stable. All of the values in this table are for one mole of material at 298 K and 1 bar. Following the chemical formula is the form of...
QUESTION 5
Consider the formation of solid silver chloride from aqueous
silver and chloride ions.
Given the following table of thermodynamic data at 298 K:
The value of K for the reaction at 25 °C is ________.
a)
1.8 × 104
b)
3.7 × 1010
c)
1.9 × 10-10
d)
810
e)
5.3 × 109
QUESTION 6
Consider the reaction:
NH 3 (g) + HCl (g) → NH 4Cl (s)
Given the following table of thermodynamic data,
...
15) Determine the molar solubility of FeCl, in pure water. K A) 0.228 M B ) 0.0301 M C) 0.311 M for FeCl, -2.45 x 10 D ) 0.174 M 15 E) 2.45 * 10M 16) 16) Which of the following statements is true? A) Kris related to the formation of complexes B) K is related to acid dissociation C) K, is related to the solubility of a solid ionic species D) Khis related to base dissociation E) K is...
with explanations thanks
A4 The molecular dipole vector is the sum of bond polarities and indicates the direction and extent of polarity on a molecule, the vector arrow points from the net negative domain towards the net positive domain. Identify which ONE of the following molecules has the molecule polarity correctly indicated by the dipole vector H H H H H H H H H H H (A) (B) (C) H H H H H (D) (E) A8 When a...
Experiment 8 Conservation of Mass kussion: action: 170 Mole wt. g/mol Aqual the combined masses of all the reactants that were initially present. Furthermore, we fter any chemical reaction, the total mass of new products and any left over reactants) will a predict the mass of each product that will be formed if we know the molecular weight or the formula (from which we can predict the molecular weight). As an example, consider the dissolve the two substances in water,...
please correct me If I did anything wrong. im very confused on
this.
• Determining k in Beer's Law 2. Determining the equilibrium constant Test Tube No. Absorbance Test Tube No. Absorbance 0,060 이79 0.253 0319 0.400 0.120 0.268 0.361 0.461 0.695 Post Laboratory Questions 1. Complete the following table and calculate k-value for the Beer's Law. All concentrations should be in M. [Fe(SCN)2) Absorbance CA Test Tube No. Diluted Fe(NO3)2 (mL) 0 . 2 3 4 s Reference 1.0...
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