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Thermodynamic functions for Borax (Ch 18 Individual tBAT Borax Borax (sodium tetraboratedecahydra...
Borax, sodium tetraboratedecahydrate, is an important mineral found in dry lakebeds in California. It is used to make so...
Borax, sodium tetraboratedecahydrate, is an important mineral found in dry lakebeds in California. It is used to make soap and glass and used as a preservative. You can use the values of Ksp (solubility-product constant) of borax at different temperatures to determine ΔH∘, ΔS∘, and ΔG∘ for the dissolution of borax: Na2B4O5(OH)4⋅8H2O(s)(borax)→2Na+(aq)+B4O5(OH)42−(aq)(tetraborate)+8H2O(l) The relationship ln(Ksp)=−ΔH∘RT+ΔS∘R has the form of a linear equation, y=mx+b, where y is lnKsp and x is 1/T. The slope (m) is equal to −ΔH∘/R, and the...
Borax (sodium tetraboratedecahydrate) is a mineral found in dry lakebeds. It is used a preservative in...
Borax (sodium tetraboratedecahydrate) is a mineral found in dry lakebeds. It is used a preservative in soap and glass manufactoring. You determined the Kop for borax at several different temperatures and your results are summarized in the table below. T (°C) Кр 40 0.0305 45 0.083 50 0.204 55 0.486 60 0.776 We know that AGPxn depends on K, the equilibrium constant, from AGPx = -RTINK We also know that 4G xn depends on temperature from AG m = AH...
please answer 1-6 and 8 DISCUSSION 1. Does the solubility of borax increase or decrease when...
please answer 1-6 and 8
DISCUSSION 1. Does the solubility of borax increase or decrease when the temperature is raised? Explain. 2. Is the forward reaction endothermic or exothermic? Justify your answer 3. Describe the mathematical changes in K, with increase in temperature and relate these numerical changes to the solubility of borax. Explain your anster 4. Calculate the sign and value of AS according to Eq. 12.7. Based on the bal- anced chemical equation for this reaction (Eq. 12.1),...
Data And Report Submission - Entropy Of Borax Dissolution
Data And Report Submission - Entropy Of Borax Dissolution(2pts) "Enthalpy and Entropy Changes of Dissolving Borax"Are you completing this experiment online?YesData CollectionRecord the concentration of HCl used in the experiment (M)0.500Table 1. Data Collection ~60°C trial~50°C trial~40°C trial~30°C trial~20°C trialActual temp (°C)60.350.939.629.518.2Vol. borate solution (mL)5.005.005.014.974.95Initial buret reading (mL)4.9020.9131.7137.8641.50Final buret reading (mL)20.9131.7137.8641.5043.44(14pts) Calculations and AnalysisUse the data collected in the table above to complete the calculations in the following table.Table view List viewTable 2. Calculations ~60°C trial~50°C trial~40°C trial~30°C trial~20°C trialVol. of HCl used (mL)Moles...
8. For the following reaction, CC2(s) + 2H2O(l) + Ca(OH)2(s) + C2H2(g) which is spontaneous at all temperatures, on...
8. For the following reaction, CC2(s) + 2H2O(l) + Ca(OH)2(s) + C2H2(g) which is spontaneous at all temperatures, one would predict that a. AG is positive for all temperatures. d. AH is - and AS is for the reaction. b. AH is + and AS is for the reaction. e. AH is + and AS' is- for the reaction. c. AH is - and AS is for the reaction. 9. Calculate the standard absolute entropy, in J/mol K. of Mg:...
Enthalpy and Entropy Changes of Dissolving Borax Plot your values of ln(Ksp) vs. 1/T and find...
Enthalpy and Entropy Changes of Dissolving Borax
Plot your values of ln(Ksp) vs. 1/T
and find the slope and y-intercept of the best fit line.
Use the equation for the best fit line and the following
equation
ln(K)=−ΔH∘RT+ΔS∘Rln(K)=−ΔH∘RT+ΔS∘R to calculate ΔH° and
ΔS° for dissolving Borax
Please help me solve the incorrect ones, thank you!
Table 2. Calculations ~60°C trial ~50°C trial ~40°C trial ~30°C trial ~20°C trial Vol. of HCl used (mL) 15.00 13.00 6.000 10.00 2.00 Moles of...
Calculate AGº for the dissolution of urea when 4.2 g of urea dissolved in 5.0 mL...
Calculate AGº for the dissolution of urea when 4.2 g of urea dissolved in 5.0 mL of water at 25 °C. R = 8.314 J/mol K Your Answer: Answer Question 3 (10 points) Calculate ASº if AG° = 80.70 kJ/mole and AH = 96 kJ/mole at 25°C. Your Answer: Answer Question 4 (10 points) Is the dissolution of urea a spontaneous process?
Consider the reaction 2N205(a) <-> 4NO2(g) + O2(a) at 25°C for which the following data are...
Consider the reaction 2N205(a) <-> 4NO2(g) + O2(a) at 25°C for which the following data are relevant: AHF N205 11.289 kJ/mol 355.28 J/K mol NO2 33.150 kJ/mol 239.90 J/K mol 02 0kJ/mol 204.80 J/K mol a. Predict the sign of AS for the reaction and explain your reasoning. b. Calculate AS" for the reaction. c. Calculate AH for the reaction. d. Calculate AG for the reaction at 25°C. e. Will the reaction be spontaneous at no temperature, low temperatures only,...
2) One of the reactions for today's class was the dissolution of solid sodium chloride. NaCl...
2) One of the reactions for today's class was the dissolution of solid sodium chloride. NaCl (s) = Nat (aq) + CI (aq) Use the data from the table to calculate: Substance NaCl (s) Nat (aq) ci" (aq) Hiº (kJ/mol) S (J/mol K) AG (kJ/mol) -411.2 72.13 -384.1 -239.66 60.25 -261.87 -167. 2 5 6.5 -131.2 229 66 1 A) AH RXN B) AS RXN C) AGⓇAXN D) The little circle which looks like the degree symbol (º) is used...
i need help on finding the last information im having trouble with creating a graph from the excel spreed sheet if some one could guide me through the steps, please. What should I place in exc...
i
need help on finding the last information im having trouble with
creating a graph from the excel spreed sheet if some one could
guide me through the steps, please. What should I place in excel to
create the graph when I placed the water bath and temp as well as
HCI added it gives me seprate lines. Thanks in advance.
C. Data Analysis pse of all buret washin You will the titrant heed to provide your data to your...
Borax (sodium tetraboratedecahydrate) is a mineral found in dry lakebeds. It is used a preservative in soap and glass manufactoring. You determined the Kop for borax at several different temperatures and your results are summarized in the table below. T (°C) Кр 40 0.0305 45 0.083 50 0.204 55 0.486 60 0.776 We know that AGPxn depends on K, the equilibrium constant, from AGPx = -RTINK We also know that 4G xn depends on temperature from AG m = AH...
please answer 1-6 and 8
DISCUSSION 1. Does the solubility of borax increase or decrease when the temperature is raised? Explain. 2. Is the forward reaction endothermic or exothermic? Justify your answer 3. Describe the mathematical changes in K, with increase in temperature and relate these numerical changes to the solubility of borax. Explain your anster 4. Calculate the sign and value of AS according to Eq. 12.7. Based on the bal- anced chemical equation for this reaction (Eq. 12.1),...
8. For the following reaction, CC2(s) + 2H2O(l) + Ca(OH)2(s) + C2H2(g) which is spontaneous at all temperatures, one would predict that a. AG is positive for all temperatures. d. AH is - and AS is for the reaction. b. AH is + and AS is for the reaction. e. AH is + and AS' is- for the reaction. c. AH is - and AS is for the reaction. 9. Calculate the standard absolute entropy, in J/mol K. of Mg:...
Enthalpy and Entropy Changes of Dissolving Borax
Plot your values of ln(Ksp) vs. 1/T
and find the slope and y-intercept of the best fit line.
Use the equation for the best fit line and the following
equation
ln(K)=−ΔH∘RT+ΔS∘Rln(K)=−ΔH∘RT+ΔS∘R to calculate ΔH° and
ΔS° for dissolving Borax
Please help me solve the incorrect ones, thank you!
Table 2. Calculations ~60°C trial ~50°C trial ~40°C trial ~30°C trial ~20°C trial Vol. of HCl used (mL) 15.00 13.00 6.000 10.00 2.00 Moles of...
Calculate AGº for the dissolution of urea when 4.2 g of urea dissolved in 5.0 mL of water at 25 °C. R = 8.314 J/mol K Your Answer: Answer Question 3 (10 points) Calculate ASº if AG° = 80.70 kJ/mole and AH = 96 kJ/mole at 25°C. Your Answer: Answer Question 4 (10 points) Is the dissolution of urea a spontaneous process?
Consider the reaction 2N205(a) <-> 4NO2(g) + O2(a) at 25°C for which the following data are relevant: AHF N205 11.289 kJ/mol 355.28 J/K mol NO2 33.150 kJ/mol 239.90 J/K mol 02 0kJ/mol 204.80 J/K mol a. Predict the sign of AS for the reaction and explain your reasoning. b. Calculate AS" for the reaction. c. Calculate AH for the reaction. d. Calculate AG for the reaction at 25°C. e. Will the reaction be spontaneous at no temperature, low temperatures only,...
2) One of the reactions for today's class was the dissolution of solid sodium chloride. NaCl (s) = Nat (aq) + CI (aq) Use the data from the table to calculate: Substance NaCl (s) Nat (aq) ci" (aq) Hiº (kJ/mol) S (J/mol K) AG (kJ/mol) -411.2 72.13 -384.1 -239.66 60.25 -261.87 -167. 2 5 6.5 -131.2 229 66 1 A) AH RXN B) AS RXN C) AGⓇAXN D) The little circle which looks like the degree symbol (º) is used...
i
need help on finding the last information im having trouble with
creating a graph from the excel spreed sheet if some one could
guide me through the steps, please. What should I place in excel to
create the graph when I placed the water bath and temp as well as
HCI added it gives me seprate lines. Thanks in advance.
C. Data Analysis pse of all buret washin You will the titrant heed to provide your data to your...
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