Homework Answers
Q7. concentration CH3COOH = 1.0 M
volume CH3COOH solution = 50 mL = 0.050 L
moles CH3COOH present = (concentration CH3COOH) * (volume CH3COOH solution in Liter)
moles CH3COOH present = (1.0 M) * (0.050 L)
moles CH3COOH present = 0.050 mol
Similarly, moles NaOH present = 0.050 mol
Since equal moles of CH3COOH and NaOH are present, therefore, the reaction will go to completion and both reactants CH3COOH and NaOH will be completely consumed
moles H2O produced = moles CH3COOH consumed = moles NaOH consumed
moles H2O produced = 0.050 mol
Q8. Joules released per mole of water formed = (total joules released) / (number of moles water produced)
Joules released per mole of water formed = (3202.55 J) / (0.050 mol)
Joules released per mole of water formed = 64051 J/mol
Joules released per mole of water formed = 64.051 kJ/mol
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help with number 7 please!
3. Heat gained by solution (temp. increase x 100 g x...
can somone check to make sure I did the correct calculations. Date REPORT SHEET Heat of...
can
somone check to make sure I did the correct calculations.
Date REPORT SHEET Heat of Neutralization 25 o A. Heat Capacity of Calorimeter 1. Temp. of calorimeter and water before mixing 2. Temp. of warm water 3. Maximum temp, determined from your curve 4. Heat lost by warm water (temp decrease x 50.0 g x 4.184 J/K-g) = 39.0 °C 1443.48, 5. Heat gained by cooler water (temp. increase X 50.0 g x 4.184 J/K-g) = 1642.22, 198 74...
Thermodynamics: heat of reaction, temp change, ans enthalpy of reaction. Please help me! I am so...
Thermodynamics: heat of reaction, temp change, ans enthalpy of
reaction. Please help me! I am so lost! thank you!
Lab Partners: Name For our calculations, we will assume that the heat capacity of each solution is 4.18J/g.c, because aqueous solutions are in fact mostly water. Data and Results Sheet Initial Initial Expt. # moles moles он Theo. Yield of H20 formed Limiting Reactant T (°C) Mass of solution (B) ΔΗ (kl/mol) T (C) AT (°C) q absorbed by solution 0...
how do i determine #2 (of A and B) from a graph with these points on...
how do i determine #2 (of A and B) from a graph with these
points on the second photo.
sorry i meant to say #3 for part A and #2 for part B.
Date REPORT SHEET Heat of Neutralization A. Heat Capacity of Calorimeter 29 O 1. Temp. of calorimeter and water before mixing 2. Temp. of warm water 3a O °C 3. Maximum temp. determined from your curve °C 4. Heat lost by warm water (temp decrease x 50.0...
Calorimetry 1. Consider the following data: 4.99 g g 50 g 24 C 38.7 °C 111.1...
Calorimetry 1. Consider the following data: 4.99 g g 50 g 24 C 38.7 °C 111.1 g/mol Mass of CaCl Mass of Water Intial Temperature Final Temeprature Molar Mass of CaCl2 (a) Calculate the heat of solution. (AH) Assume that the specific heat of the solution is the same as water, 4.184 J/g- C and that no heat is gained or lost by the cup. (4 pts) (b) Calculate the number of moles of CaCl2. (3 pts) (c) Calculate the...
Lab 9 Heat of Reaction OBJECTIVE: To experimentally determine the heat of reaction for two exothermic...
Lab 9 Heat of Reaction
OBJECTIVE:
To experimentally determine the heat of reaction for two
exothermic reactions.
DISCUSSION:
The heat given off or gained in a reaction is called the heat
of reaction (∆?????????).
A reaction that releases heat is known as an exothermic
reaction; an endothermic reaction
is one that absorbs heat.
The heat of the reaction corresponds to one mole of the
reactant and is expressed in
kilocalories per mole of reactant or in kilojoules per mole of...
Part IlI Heat of Neutralization of Weak Acid, HC,H,O, and Strong Base, NaOH Balanced reaction: 1)...
Part IlI Heat of Neutralization of Weak Acid, HC,H,O, and Strong Base, NaOH Balanced reaction: 1) Temperature of S0 mL of 2.0 M HCHO, before misxing 2) Temperature of 50 mL of 2.0 M NaOH before mixing 3) Temperature of 100 mL of solution after mixing 4) Assume that the density (1.00 g/ml) and specific heat of the solution (4.184 1-g' C') are the same as pure water. The heat gained by the solution is Calculation Using the heat capacity....
could someone please help me with the calculations. im very confused 2. The heat of solution...
could someone please help me with the calculations. im very
confused
2. The heat of solution of 10 M H,SO Data Trail 1, Trail 2 222 22.1°C 23.0°C 22.8°C 31.500 / 630.0°c Initial temperature of IO MH,SO (10 mL in a graduated cylinder) Initial temperature of water in calorimeter 1 (90 mL deionized water) Final temperature of calorimeter 1 (90 ml water + added 10 mL H,SO) Triali Trial 2 Calculations (a) Temperature change of water in calorimeter 1 (ATC...
5 g of molten NaCl is at melting temp. The salt is added to 25 mL...
5 g of molten NaCl is at melting temp. The salt is added to 25 mL of water at 25 C in a coffee cup calorimeter. The salt becomes solid and the temp of water increases to 47.9C. a.) calculate amount of heat transferred in Joules b.) is the freezing of salt endothermic or exothermic? c.) calculate the moles enthalpy of fusion for NaCl in kJ/mol
B. Determine for the reaction in KJ/mol of water formed. C. Assuming the heat absorbed or...
B. Determine for the
reaction in KJ/mol of water formed.
C. Assuming the heat absorbed or released by the calorimeter is
nonegligible, how does ignoring the heat absorbed or released by
the calorimeter affect the magnitude of ? Explain
your answer.
Consider the reaction of 48.3 mL of 1.0 M HCI and 49.2 mL of 1.0 M NaOH. Reaction caused the initial temperature to increase from 22.4 °C to 28.7 °C. 2. a. Determine the heat change for this reaction.
lease write legibly. Round all final answers to the proper number of significant figures. Suppose you...
lease write legibly. Round all final answers to the proper number of significant figures. Suppose you carry out an experiment to measure for the following reaction Nule] + 11 ng]- $ 140a + 14 (1) You follow the procedure outlined in the lab manual and acquire the following data using 50.0 mL of 1.0 M NHOH and 50.0 mL of 1,0 M HCl (for a total mass of 1000 g) A Temperature of calorimeter and NH OH before mixing: 22.1°C...
can
somone check to make sure I did the correct calculations.
Date REPORT SHEET Heat of Neutralization 25 o A. Heat Capacity of Calorimeter 1. Temp. of calorimeter and water before mixing 2. Temp. of warm water 3. Maximum temp, determined from your curve 4. Heat lost by warm water (temp decrease x 50.0 g x 4.184 J/K-g) = 39.0 °C 1443.48, 5. Heat gained by cooler water (temp. increase X 50.0 g x 4.184 J/K-g) = 1642.22, 198 74...
Thermodynamics: heat of reaction, temp change, ans enthalpy of
reaction. Please help me! I am so lost! thank you!
Lab Partners: Name For our calculations, we will assume that the heat capacity of each solution is 4.18J/g.c, because aqueous solutions are in fact mostly water. Data and Results Sheet Initial Initial Expt. # moles moles он Theo. Yield of H20 formed Limiting Reactant T (°C) Mass of solution (B) ΔΗ (kl/mol) T (C) AT (°C) q absorbed by solution 0...
how do i determine #2 (of A and B) from a graph with these
points on the second photo.
sorry i meant to say #3 for part A and #2 for part B.
Date REPORT SHEET Heat of Neutralization A. Heat Capacity of Calorimeter 29 O 1. Temp. of calorimeter and water before mixing 2. Temp. of warm water 3a O °C 3. Maximum temp. determined from your curve °C 4. Heat lost by warm water (temp decrease x 50.0...
Calorimetry 1. Consider the following data: 4.99 g g 50 g 24 C 38.7 °C 111.1 g/mol Mass of CaCl Mass of Water Intial Temperature Final Temeprature Molar Mass of CaCl2 (a) Calculate the heat of solution. (AH) Assume that the specific heat of the solution is the same as water, 4.184 J/g- C and that no heat is gained or lost by the cup. (4 pts) (b) Calculate the number of moles of CaCl2. (3 pts) (c) Calculate the...
Lab 9 Heat of Reaction
OBJECTIVE:
To experimentally determine the heat of reaction for two
exothermic reactions.
DISCUSSION:
The heat given off or gained in a reaction is called the heat
of reaction (∆?????????).
A reaction that releases heat is known as an exothermic
reaction; an endothermic reaction
is one that absorbs heat.
The heat of the reaction corresponds to one mole of the
reactant and is expressed in
kilocalories per mole of reactant or in kilojoules per mole of...
Part IlI Heat of Neutralization of Weak Acid, HC,H,O, and Strong Base, NaOH Balanced reaction: 1) Temperature of S0 mL of 2.0 M HCHO, before misxing 2) Temperature of 50 mL of 2.0 M NaOH before mixing 3) Temperature of 100 mL of solution after mixing 4) Assume that the density (1.00 g/ml) and specific heat of the solution (4.184 1-g' C') are the same as pure water. The heat gained by the solution is Calculation Using the heat capacity....
could someone please help me with the calculations. im very
confused
2. The heat of solution of 10 M H,SO Data Trail 1, Trail 2 222 22.1°C 23.0°C 22.8°C 31.500 / 630.0°c Initial temperature of IO MH,SO (10 mL in a graduated cylinder) Initial temperature of water in calorimeter 1 (90 mL deionized water) Final temperature of calorimeter 1 (90 ml water + added 10 mL H,SO) Triali Trial 2 Calculations (a) Temperature change of water in calorimeter 1 (ATC...
B. Determine for the
reaction in KJ/mol of water formed.
C. Assuming the heat absorbed or released by the calorimeter is
nonegligible, how does ignoring the heat absorbed or released by
the calorimeter affect the magnitude of ? Explain
your answer.
Consider the reaction of 48.3 mL of 1.0 M HCI and 49.2 mL of 1.0 M NaOH. Reaction caused the initial temperature to increase from 22.4 °C to 28.7 °C. 2. a. Determine the heat change for this reaction.
lease write legibly. Round all final answers to the proper number of significant figures. Suppose you carry out an experiment to measure for the following reaction Nule] + 11 ng]- $ 140a + 14 (1) You follow the procedure outlined in the lab manual and acquire the following data using 50.0 mL of 1.0 M NHOH and 50.0 mL of 1,0 M HCl (for a total mass of 1000 g) A Temperature of calorimeter and NH OH before mixing: 22.1°C...
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