Homework Answers
Question 1. The largest temperature change is produced by mixing 50 mL of 0.1 M HCl and 50 mL of 0.1 M NaOH, i.e. the volume ratio HCl:NaOH = 50:50 = 1:1
Explanation: At 1:1 volume ratio of HCl and NaOH, complete neutralization occurs, as a result, the largest temperature change is produced.
Question 2. The smallest temperature change is produced by mixing 90 mL of 0.1 M HCl and 10 mL of 0.1 M NaOH, i.e. the volume ratio HCl:NaOH = 90:10 = 9:1
Explanation: At 9:1 volume ratio of HCl and NaOH, only 10% of HCl gets neutralized, as a result, the smallest temperature change is produced.
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Data Table 1: Temperature Changes during Mixing of Different Volumes of 0.10 M HCl and 0.10 M NaOH Experiment Number HC...
ty ah Run 2 Run 1 Average initial temperature of HCl and A NaOH solutions (°C)...
ty ah Run 2 Run 1 Average initial temperature of HCl and A NaOH solutions (°C) 29.8 32.4 Maximum temperature of HCl-NAOH solution (°C) 34.5 30.5 Maximum temperature change for reaction (°C) 13 Total volume of HCl plus NaOH solutions (mL) Mass of final NaCl solution (g) Heat produced from HCl-NaOH reaction (J) Moles of H,O formed in reaction (mol) Heat expected from moles of H,0 formed (J) Heat absorbed by calorimeter (J) Heat capacity of calorimeter (J/oC) Average heat...
Date Section Code Data Sheet Table 11.1. Time-temperature data. A. Volume of HCl solution (mL) Molarity...
Date Section Code Data Sheet Table 11.1. Time-temperature data. A. Volume of HCl solution (mL) Molarity of HCl solution (M) Volume of NaOH solution (mL) Molarity of NaOH solution (M) Initial temperature of HCl solution (°C) Initial temperature of NaOH solution (°C) Temperatures of solution (°C) at 0.25-min. (15-sec.) intervals 0.25 Run 1 Run 2 49.5 49.8 12.119 2.119 53.2 53.6 2.087 2.087 18.9°C 18.8°C a.oc 18ợc. . 29.9 29.8 32.3 3107 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25...
reaction one NaOH and HCl. 50.0 mL of 2.0 M HCl solution into 50.0 mL of...
reaction one NaOH and HCl. 50.0 mL of 2.0 M HCl solution into
50.0 mL of 2.0 M NaOH
reaction two 50 mL OF 2.0 M NaOH into 50 mL of 2.0 M NH4Cl
reaction three 50.0 mL of 2.0 M HCl into 50.0 mL NH3
pleanse answer all of the questions
Experinen DATA TABLE Reaction 1 Reaction 2 Reaction 3 34,012。21 2H0 Maximum temperature (C) Initial temperature (C) Temperature change (&T) DATA ANALYSIS 1. Calculate the amount of heat...
Based on the temperature change when reacted with NaOH, is the unknown acid HCl, H3PO4, or...
Based on the temperature change when reacted with NaOH, is the
unknown acid HCl, H3PO4, or H2SO4?
Volume NaOH (mL) 30 mL Volume Unknown Acid (mb) 30 mL Temperature change (°C) 5.55°C 20 mL 40 mL 3.02°C 10 mL 50 mL 2.41 °C 40 mL 20 mL 8.83 °C 50 mL 10 mL 4.42 °C 45 mL 15 mL 6.60 °C 55 mL 5 ml 2.25 °C Mole Ratios in a Chemical Statistics for Run 6 Temperature 50 min: 26...
1. Strong Acid versus Strong Base Derive a titration curve for the titration of 50.0 mL...
1. Strong Acid versus Strong Base Derive a titration curve for the titration of 50.0 mL of 0.150 M HCl with 0.100 M NaOH. Calculate the pH for the following volumes of NaOH (0 mL, 25 mL, 50 mL, 70 mL, 75 mL, 80 mL, 90 mL, 100 mL). pH Volume of NaOH, in milliters 0 25 50 70 75 80 90 100 L(g) (h) pH at the equivalence point Specify your choice of indicator
Ent //n Data and Calculations: Enter your experimental data and calculations in the data sheet below....
Ent //n Data and Calculations: Enter your experimental data and calculations in the data sheet below. g/mol Qmmonium g/mol B6.043 LLo. 95 Determination of the Heat of Solution Molecular weight of: NH.NO, (Salt A) CaCl (Salt B) 27 0 s): With NH4NO, With CaCl C Temperature of water before mixing (t (a) Temperature of solution after mixing: 10 100 110 90 120 80 70 60 5C 3C 40 20 Time (s) Salt A 841 35 8s 35 33 32 32...
Enthalpy Determination for HCI+NaOH Reaction 1. Mass of empty Styrofoam cup, g: 2. Mass of Styrofoam...
Enthalpy Determination for HCI+NaOH Reaction 1. Mass of empty Styrofoam cup, g: 2. Mass of Styrofoam cup + HCl, g: 3. Initial temperature of HCl solution, "C: Final temperature of solution after mixing, °C 4. 5. Change in temperature, °C: 1215 6. Mass of Styrofoam cup with HCI and NaOH added, g 7. Mass of solution, g: 8. AH of reaction, J: 9. AH of reaction, kJ/mole: 10. AH of reaction based on AH? data, kJ/mole: 11. Percent deviation: Enthalpy...
please answer all dmperstu Use the solubility curve provided on the right to determine the answers to the followi...
please answer all
dmperstu Use the solubility curve provided on the right to determine the answers to the following questions: 7. How many grams of solute are required to saturate 100 g of water in each of the following solutions? a) KCL at 80 C b) KCIO, at 90°C c) NaNO, at 10°C d) SO2 at 20 °C e) NH Cl at 70°C esd. 8. What is each of the solutions below: saturated, unsaturated or supersaturated? All of the solutes...
5. A student carries out a calorimetry experiment using HCl and NaOH. What effect will each of th...
5. A student carries out a calorimetry experiment using HCl and NaOH. What effect will each of the following have on the calculated enthalpy of the reaction relative to the actual enthalpy of reaction? (larger, smaller or no change). Explain your reasoning a. The thermometer always registered a temperature 0.30 °C higher than the actual temperature b. The calorimeter constant used in the calculations by the student is larger than the actual value. (Hint: The best way to answer this...
1. 100 ml of 0.05 M H2S + 50ml of 0.1 M NaOH 2. 200 ml...
1. 100 ml of 0.05 M H2S + 50ml of 0.1 M NaOH 2. 200 ml of 0.1 M Na2CO3 + 100 ml of 0,365% HCl 3. 50ml of 0.1M Na3PO4 + 100ml of 0.05 M H2SO4 4. 80 ml of 0.01M HNO2 + 20ml of 0.05 M HNO3 5. 20 ml of 0.05 M H2C2O4 + 200 ml of 0.01 M KOH 6. 100 ml of 0.05 M H2S + 100 ml of 0.1 M NaOH 7. 50 ml...
ty ah Run 2 Run 1 Average initial temperature of HCl and A NaOH solutions (°C) 29.8 32.4 Maximum temperature of HCl-NAOH solution (°C) 34.5 30.5 Maximum temperature change for reaction (°C) 13 Total volume of HCl plus NaOH solutions (mL) Mass of final NaCl solution (g) Heat produced from HCl-NaOH reaction (J) Moles of H,O formed in reaction (mol) Heat expected from moles of H,0 formed (J) Heat absorbed by calorimeter (J) Heat capacity of calorimeter (J/oC) Average heat...
Date Section Code Data Sheet Table 11.1. Time-temperature data. A. Volume of HCl solution (mL) Molarity of HCl solution (M) Volume of NaOH solution (mL) Molarity of NaOH solution (M) Initial temperature of HCl solution (°C) Initial temperature of NaOH solution (°C) Temperatures of solution (°C) at 0.25-min. (15-sec.) intervals 0.25 Run 1 Run 2 49.5 49.8 12.119 2.119 53.2 53.6 2.087 2.087 18.9°C 18.8°C a.oc 18ợc. . 29.9 29.8 32.3 3107 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25...
reaction one NaOH and HCl. 50.0 mL of 2.0 M HCl solution into
50.0 mL of 2.0 M NaOH
reaction two 50 mL OF 2.0 M NaOH into 50 mL of 2.0 M NH4Cl
reaction three 50.0 mL of 2.0 M HCl into 50.0 mL NH3
pleanse answer all of the questions
Experinen DATA TABLE Reaction 1 Reaction 2 Reaction 3 34,012。21 2H0 Maximum temperature (C) Initial temperature (C) Temperature change (&T) DATA ANALYSIS 1. Calculate the amount of heat...
Based on the temperature change when reacted with NaOH, is the
unknown acid HCl, H3PO4, or H2SO4?
Volume NaOH (mL) 30 mL Volume Unknown Acid (mb) 30 mL Temperature change (°C) 5.55°C 20 mL 40 mL 3.02°C 10 mL 50 mL 2.41 °C 40 mL 20 mL 8.83 °C 50 mL 10 mL 4.42 °C 45 mL 15 mL 6.60 °C 55 mL 5 ml 2.25 °C Mole Ratios in a Chemical Statistics for Run 6 Temperature 50 min: 26...
1. Strong Acid versus Strong Base Derive a titration curve for the titration of 50.0 mL of 0.150 M HCl with 0.100 M NaOH. Calculate the pH for the following volumes of NaOH (0 mL, 25 mL, 50 mL, 70 mL, 75 mL, 80 mL, 90 mL, 100 mL). pH Volume of NaOH, in milliters 0 25 50 70 75 80 90 100 L(g) (h) pH at the equivalence point Specify your choice of indicator
Ent //n Data and Calculations: Enter your experimental data and calculations in the data sheet below. g/mol Qmmonium g/mol B6.043 LLo. 95 Determination of the Heat of Solution Molecular weight of: NH.NO, (Salt A) CaCl (Salt B) 27 0 s): With NH4NO, With CaCl C Temperature of water before mixing (t (a) Temperature of solution after mixing: 10 100 110 90 120 80 70 60 5C 3C 40 20 Time (s) Salt A 841 35 8s 35 33 32 32...
Enthalpy Determination for HCI+NaOH Reaction 1. Mass of empty Styrofoam cup, g: 2. Mass of Styrofoam cup + HCl, g: 3. Initial temperature of HCl solution, "C: Final temperature of solution after mixing, °C 4. 5. Change in temperature, °C: 1215 6. Mass of Styrofoam cup with HCI and NaOH added, g 7. Mass of solution, g: 8. AH of reaction, J: 9. AH of reaction, kJ/mole: 10. AH of reaction based on AH? data, kJ/mole: 11. Percent deviation: Enthalpy...
please answer all
dmperstu Use the solubility curve provided on the right to determine the answers to the following questions: 7. How many grams of solute are required to saturate 100 g of water in each of the following solutions? a) KCL at 80 C b) KCIO, at 90°C c) NaNO, at 10°C d) SO2 at 20 °C e) NH Cl at 70°C esd. 8. What is each of the solutions below: saturated, unsaturated or supersaturated? All of the solutes...
5. A student carries out a calorimetry experiment using HCl and NaOH. What effect will each of the following have on the calculated enthalpy of the reaction relative to the actual enthalpy of reaction? (larger, smaller or no change). Explain your reasoning a. The thermometer always registered a temperature 0.30 °C higher than the actual temperature b. The calorimeter constant used in the calculations by the student is larger than the actual value. (Hint: The best way to answer this...
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