Description Group Member Names: undefined undefined undefined Question #1. In your own words, de ...

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Description Group Member Names: undefined undefined undefined Question #1. In your own words, describe the goal(s) of this experiment. undefined undefined undefined Calculation #1. Saturated solution sample temperature data undefined Enter the temperature data you recorded for your saturated Borax samples. undefined Calculate the mean temperature in units of C and K, and then calculate 1/T (1/K). undefined Report Table 1. Temperature data and calculation results. sample initial temperature (before sampling), oC temperature after sampling (oC) mean temp (oC) mean temp (K) 1/T (1/K) 45A 45.0 44.5 45B 44.5 43.9 35A 35.2 35.0 35B 35.0 34.5 25A 25.8 25.7 25B 25.7 25.7 15A 15.7 15.6 15B 15.6 13.2 5A 5.6 5.6 5B 5.6 5.3 undefined undefined undefined Question #2. (0.5 pt.) Record the concentration of the standard solution of HCl. undefined 0.1962 undefined undefined Calculation #2. undefined Enter the volume of HCl solution required to reach the endpoint in each of your titrations. Calculate the molar equilibrium concentration of B4O5(OH)42? in each borax sample solution your group titrated. (Refer to equation (7) in the lab for the molar ratio.) Calculate a value of Ksp and ln Ksp for each sample solution. (Refer to equation (6) in the lab). undefined Report Table 2 Equilibrium Concentrations of B4O5(OH)­2? from Titrations of Saturated Solutions of Borax at Different Temperatures, and Ksp and ln Ksp values. sample volume of HCl required to reach endpoint (mL) equilibrium concentration of B4O5(OH)42? (M) Ksp ln Ksp 45A 21.9 45B 23.5 35A 46.6-21.9=24.7 35B 47.9-23.5=24.4 25A 15.2 25B 14.1 15A 27.6-15.2=22.4 15B 26.0-14.1=11.9 5A 33.2-27.6=5.6 5B 33.5-26.0=7.5 undefined undefined undefined undefined Calculation #3. Show an example calculation for the equilibrium molar concentration of B4O5(OH)42? using the titration data for sample 35A. undefined ?Include units and show all work, including the molar ratio of acid to base. undefined undefined undefined Calculation #4. Show an example calculation for the value of Ksp using the data for sample 35A. Refer to equation (6) in the lab. undefined ?Use appropriate significant figures and show all work. undefined undefined Question #3. Using Excel 365, construct a graph by plotting ln Ksp (y-axis) versus 1/T (x-axis) using data from the 10 samples of saturated borax solution. Make sure to use the mean temperature in units of K. Create a best-fit line (trendline) through the ten data points and determine slope and y-intercept of the line. Insert an image of your ln Ksp versus 1/T graph below. undefined ?Label the axes, provide a title, and display the best-fit line (trendline) and equation on the graph. undefined undefined Calculation #5. Calculate the values of ?Ho (in kJ/mol) and ?So (in J/molK) using your experimentally determined slope and y-intercept values from your graph of ln Ksp vs. 1/T. Refer to equations (10), (11), and (12) in the lab. undefined ?Include proper units (see above), use appropriate significant figures, and show all work. undefined undefined Calculation #6. Calculate the value of ?Go using equation (8) (?Go = ?RT ln Ksp) and the data for sample 35A. Enter your result in Report Table 3 below (Calculation #8). undefined ? Use appropriate significant figures and show all work. undefined undefined Calculation #7. Calculate the value of ?Go using equation (9) (?Go = ?Ho - T?So) and the data for sample 35A. Enter your result in Report Table 3 below (Calculation #8). undefined ?Use appropriate significant figures and show all work. undefined undefined undefined undefined undefined Calculation #8. Calculate the value of ?Go (in kJ/mol) by using equation (8) (?Go = ?RT ln Ksp) and by using equation (9) (?Go = ?Ho - T?So) for the nine remaining samples of saturated borax solution. undefined Report Table 3. Calculated Values of ?Go using Equation (8) and ?Go using Equation (9) sample ?Go (kJ/mol) using ?Go = ?RT ln Ksp ?Go (kJ/mol) using ?Go = ?Ho - T?So 45A 45B 35A 35B 25A 25B 15A 15B 5A 5B undefined Question #4. Does the value of the equilibrium constant change as the temperature changes? If so, explain why the value changes. undefined undefined Question #5. Compare your experimentally determined value for Ksp at 25oC (i.e. samples 25A and 25B) with the accepted value of 1.8 x 10?2. Are they the same? If they are not the same, explain how they differ. How might you modify the design of the experiment to improve the experimental results (i.e., to produce values that are in better agreement with the theoretical values)? undefined undefined Question #6. Consider your experimentally determined value of ?Ho for the dissolution of borax in water. Is this process exothermic or endothermic? Explain using your data and results. undefined undefined undefined Question #7. Based on your observations in this experiment, predict the sign of ?So for the dissolution of borax in water. What is the sign of your experimentally determined value for ?So? Are they consistent? Why or why not? undefined undefined Question #8. Based on your experimentally determined value for ?Go at 25oC, is the dissolution of borax in water a spontaneous process? If not, why does borax dissolve in water? Explain. (Hint: think about the difference between ?Go and ?G.) undefined