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2) Acetone, CH,COCH, is a volatile liquid solvent; it is used in nail polish, for example....
Methanol (CH3OH) is a volatile liquid used widely as a laboratory solvent. Methanol has a standard...
Methanol (CH3OH) is a volatile liquid used widely as a laboratory solvent. Methanol has a standard boiling point of 64.8 °C and its enthalpy of vaporization is 37.6 kJ mol! What is its vapour pressure (in bar) at 52.4 °C? You have 5 attempts at this question. Answer: Check Consider the molecule below: :0=s=0: Select ALL the intermolecular forces that are expected to be present between two of these molecules. Select as many answers as are applicable, however points will...
I need all answered ail Verizon 9:39 AM * 100% Q12P-2018.docx For all calculations: show work...
I
need all answered
ail Verizon 9:39 AM * 100% Q12P-2018.docx For all calculations: show work and pay attention to significant figures and units. 1. Calculate the total amount of heat (required or released) if a sample of 2.00 moles of carbon tetrachloride (CCI M- 153.81 g/mol) is taken through the process: CCL(, 300.0 K) à CCL(g, 400.0 K) molar heat capacity of liquid, C 130.7 J/mol-K, molar heat capacity of gas, C 83.3 Jmol-K molar enthalpy of vaporization, ,...
1. Out of the following, which system is decreasing in entropy? a. CH,OH,) → CH2OH() C....
1. Out of the following, which system is decreasing in entropy? a. CH,OH,) → CH2OH() C. N2(g) + O2(g) → 2 NOG) b. NaClg) → Nataq) + Clian) d. 2 NO26) ► N20419 2. Which of the following is always spontaneous? a. C2H01) + 302(g) → 2CO2(g) + 3H2O(g) AH<0 b. Sublimation of solid CO2 C. Water freezing d. The formation of water from gaseous hydrogen and oxygen e. None of the above 3. Will liquid water evaporate at room...
Problem 9.8 Trichloroethylene Trichloroethylene, a widely used degreasing solvent for machine parts, is produced in a...
Problem 9.8 Trichloroethylene Trichloroethylene, a widely used degreasing solvent for machine parts, is produced in a two-step reaction sequence. Ethylene is first chlorinated to yield tetrachloroethane, which is dehydrochlorinated to form trichloroethylene. (1) C2H4(g) + 2Cl2 → C2H2C14(1) + H2(g) AH, –385.76 kJ (2) C2H2C14(1) ► C2HCl3(1) + HCl(9) The standard heat of formation of liquid trichloroethylene is -276.2 kJ/mol. Physical Property Tables Heat of Formation and Reaction Use the given data and tabulated standard heats of formation of ethylene...
4. (3 points) Consider the following enthalpies of reaction: CaCz(s) + 2H20 (Ca(OH)2(s) + CH2(g) AH,º=-127.9...
4. (3 points) Consider the following enthalpies of reaction: CaCz(s) + 2H20 (Ca(OH)2(s) + CH2(g) AH,º=-127.9 kJ/mol Cas) + 1/20 (g) - Cao(s) AH,º=-635.1 kJ/mol Cal(s) + H200 - Ca(OH) (9) AH,=-65.2 kJ/mol The standard enthalpies of combustion of graphite and C2H2(g) are -393.51 and -1299.58 kJ/mol, respectively. Calculate the standard enthalpy of formation of CaCz(s) at 25°C. Aside on enthalpy of combustion: Please note that the standard enthalpy of combustion will form H200, not H:09), if the substance includes...
Please Answer Both of These Questions: 1): 2): For a particular isomer of CH 8, the...
Please Answer Both of These
Questions:
1):
2):
For a particular isomer of CH 8, the combustion reaction produces 5099.5 kJ of heat per mole of C,H8(g) consumed, under standard conditions. 25 CH,8(g) + 203(g) (g) → 8C02(g) + 9H,0(g) AH x = -5099.5 kJ/mol What is the standard enthalpy of formation of this isomer of C,H,8(g)? Consider these reactions, where M represents a generic metal. 1. 2 M(s) + 6 HCl(aq) — 2 MC12(aq) + 3H2(g) AH = -632.0...
An aqueous CaCl2 solution has a vapor pressure of 80.2 mmHg at 50 ∘C. The vapor pressure of pure water at this temperature is 92.6 mmHg. What is the concentration of CaCl2 in mass percent? A hypotheti...
An aqueous CaCl2 solution has a vapor pressure of 80.2 mmHg at 50 ∘C. The vapor pressure of pure water at this temperature is 92.6 mmHg. What is the concentration of CaCl2 in mass percent? A hypothetical solution forms between a solid and a liquid. The values of the thermodynamic quantities involved in the process are shown in the following table. Action Enthalpy separation of solute 11.5 kJ/mol separation of solvent 21.8 kJ/mol formation of solute-solvent interactions -86.7 kJ/mol solute...
Problem 9.10 Trimethylpentane The standard heat of combustion (AH) of liquid 2,3,3-trimethylpentane (CgH18) is reported in...
Problem 9.10 Trimethylpentane The standard heat of combustion (AH) of liquid 2,3,3-trimethylpentane (CgH18) is reported in a table of physical properties to be - 4850.0 kJ/mol. A footnote indicates that the reference temperature for the reported value is 25°C and the presumed combustion products are CO2(g) and H20(9). The heat capacity of water is approximately 75.40 J/(mol K) over the temperature range of interest. Physical Property Tables Heat of Combustion There is some question about the accuracy of the reported...
Thermodynamics Practice Problems 1. Predict the sign of AS.(positive or negative) for the following reactions a...
Thermodynamics Practice Problems 1. Predict the sign of AS.(positive or negative) for the following reactions a 2 Mg(s) +,(@) 2 Mgo (s) AS b. CH206(s) → 2C,H,OH(I) + 2003(g) AS c. 2 NH3(g) + CO2(g) → H2O(l) + NH CONH3(aq) AS d. Cu(s) (at 100°C) → Cu(s) (at 25°C) AS 2. Which two variables can indicate if a reaction is spontaneous or not? 3. The second law of thermodynamics tells us that: a Energy is conserved. b. The entropy of...
Typical Math Problems 1) What is the pH of a buffer solution which is 0.12M in...
Typical Math Problems 1) What is the pH of a buffer solution which is 0.12M in benzoic acid, pKa 4.19, and is 0.11M in sodium benzoate? 2) Find the %-diss of a buffer if the pKa 7.10 and the pH of the buffer is 7.50. 3) A weak monoprotic acid has a pKa 6.15. 50.00 mL of an 0.1250M aqueous solution of this weak acid is titrated with 0.1000M Na0H. a) What is the equivalence point volume and ½ equivalence...
Methanol (CH3OH) is a volatile liquid used widely as a laboratory solvent. Methanol has a standard boiling point of 64.8 °C and its enthalpy of vaporization is 37.6 kJ mol! What is its vapour pressure (in bar) at 52.4 °C? You have 5 attempts at this question. Answer: Check Consider the molecule below: :0=s=0: Select ALL the intermolecular forces that are expected to be present between two of these molecules. Select as many answers as are applicable, however points will...
I
need all answered
ail Verizon 9:39 AM * 100% Q12P-2018.docx For all calculations: show work and pay attention to significant figures and units. 1. Calculate the total amount of heat (required or released) if a sample of 2.00 moles of carbon tetrachloride (CCI M- 153.81 g/mol) is taken through the process: CCL(, 300.0 K) à CCL(g, 400.0 K) molar heat capacity of liquid, C 130.7 J/mol-K, molar heat capacity of gas, C 83.3 Jmol-K molar enthalpy of vaporization, ,...
1. Out of the following, which system is decreasing in entropy? a. CH,OH,) → CH2OH() C. N2(g) + O2(g) → 2 NOG) b. NaClg) → Nataq) + Clian) d. 2 NO26) ► N20419 2. Which of the following is always spontaneous? a. C2H01) + 302(g) → 2CO2(g) + 3H2O(g) AH<0 b. Sublimation of solid CO2 C. Water freezing d. The formation of water from gaseous hydrogen and oxygen e. None of the above 3. Will liquid water evaporate at room...
Problem 9.8 Trichloroethylene Trichloroethylene, a widely used degreasing solvent for machine parts, is produced in a two-step reaction sequence. Ethylene is first chlorinated to yield tetrachloroethane, which is dehydrochlorinated to form trichloroethylene. (1) C2H4(g) + 2Cl2 → C2H2C14(1) + H2(g) AH, –385.76 kJ (2) C2H2C14(1) ► C2HCl3(1) + HCl(9) The standard heat of formation of liquid trichloroethylene is -276.2 kJ/mol. Physical Property Tables Heat of Formation and Reaction Use the given data and tabulated standard heats of formation of ethylene...
4. (3 points) Consider the following enthalpies of reaction: CaCz(s) + 2H20 (Ca(OH)2(s) + CH2(g) AH,º=-127.9 kJ/mol Cas) + 1/20 (g) - Cao(s) AH,º=-635.1 kJ/mol Cal(s) + H200 - Ca(OH) (9) AH,=-65.2 kJ/mol The standard enthalpies of combustion of graphite and C2H2(g) are -393.51 and -1299.58 kJ/mol, respectively. Calculate the standard enthalpy of formation of CaCz(s) at 25°C. Aside on enthalpy of combustion: Please note that the standard enthalpy of combustion will form H200, not H:09), if the substance includes...
Please Answer Both of These
Questions:
1):
2):
For a particular isomer of CH 8, the combustion reaction produces 5099.5 kJ of heat per mole of C,H8(g) consumed, under standard conditions. 25 CH,8(g) + 203(g) (g) → 8C02(g) + 9H,0(g) AH x = -5099.5 kJ/mol What is the standard enthalpy of formation of this isomer of C,H,8(g)? Consider these reactions, where M represents a generic metal. 1. 2 M(s) + 6 HCl(aq) — 2 MC12(aq) + 3H2(g) AH = -632.0...
Problem 9.10 Trimethylpentane The standard heat of combustion (AH) of liquid 2,3,3-trimethylpentane (CgH18) is reported in a table of physical properties to be - 4850.0 kJ/mol. A footnote indicates that the reference temperature for the reported value is 25°C and the presumed combustion products are CO2(g) and H20(9). The heat capacity of water is approximately 75.40 J/(mol K) over the temperature range of interest. Physical Property Tables Heat of Combustion There is some question about the accuracy of the reported...
Thermodynamics Practice Problems 1. Predict the sign of AS.(positive or negative) for the following reactions a 2 Mg(s) +,(@) 2 Mgo (s) AS b. CH206(s) → 2C,H,OH(I) + 2003(g) AS c. 2 NH3(g) + CO2(g) → H2O(l) + NH CONH3(aq) AS d. Cu(s) (at 100°C) → Cu(s) (at 25°C) AS 2. Which two variables can indicate if a reaction is spontaneous or not? 3. The second law of thermodynamics tells us that: a Energy is conserved. b. The entropy of...
Typical Math Problems 1) What is the pH of a buffer solution which is 0.12M in benzoic acid, pKa 4.19, and is 0.11M in sodium benzoate? 2) Find the %-diss of a buffer if the pKa 7.10 and the pH of the buffer is 7.50. 3) A weak monoprotic acid has a pKa 6.15. 50.00 mL of an 0.1250M aqueous solution of this weak acid is titrated with 0.1000M Na0H. a) What is the equivalence point volume and ½ equivalence...
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