Homework Answers
Add Answer to:
B. ENTHALPY CHANGES - NaOH AND HCI REACTION SOLID FIRST Pathway SOLID LAST Pathway Mass of...
V. Heat of reaction for NaOH (s) + HCI (aq) → Naci (aq) + H20 ()-dH(net) Direct determination Mas...
need help with calculations
V. Heat of reaction for NaOH (s) + HCI (aq) → Naci (aq) + H20 ()-dH(net) Direct determination Mass NaOH Moles NaOH = moles Mass of HCI solution Final temp. of solution Initial temp. of solution AT solution 30 23 C 4 C AH(net)(Direct) per mole NaOH Calculation Indirect determination Heat of dissolution of NaOH (s) [AH(diss)] Mass NaOH Moles NaOH moles Mass of water Final temp. of solution Initial temp. of solution AT solution AH(diss)-...
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...
Table 4.3: Enthalpy of Dissolution for a Salt Caci, Na,CO, 104,0 Volume of water 90. 1...
Table 4.3: Enthalpy of Dissolution for a Salt Caci, Na,CO, 104,0 Volume of water 90. 1 mL Mass of water (assume a density of 1.00 g/mL) Initial temperature of water 90, 1mL 90.19 22.10 13.050g 16.5°C -5.6°C 90.1g 21.9°C 13.0489 39.6°0 17.7°C Mass of salt Final temperature of solution Change in temperature (47) qwater qcal Arxn AHS per mole of salt in kJ/mol (AH) CAIUTTeter Calorimeter constant or heat capacity of the calorimeter (NOT the specific heat) Average Ccal 31.451°0...
The change in enthalpy when 1 mol of ice is melted at 273K is 6008 J Heat Capacity of liquid water, Cp_{L} = 75.44 J/mol K Heat Capacity of solid water, Cp_{S} = 38J/mol K Enthalpy chage of melting at...
The change in enthalpy when 1 mol of ice is melted at 273K is 6008 J Heat Capacity of liquid water, Cp_{L} = 75.44 J/mol K Heat Capacity of solid water, Cp_{S} = 38J/mol K Enthalpy chage of melting at 273K, \Delta H_{273}=6008 J Calculate the standard enthalpy of fusion for ice. Calculate the heat released when 100 g of water supercooled at 250K solidify Initial T=25°C=298K Thanks
Table 4.2: Enthalpy of Neutralization for an Acid-Base Reaction Trial 1 Concentration of NaOH 1. i...
Table 4.2: Enthalpy of Neutralization for an Acid-Base Reaction Trial 1 Concentration of NaOH 1. i mol/L Initial temperature of NaOH 22.1°C Volume of NaOH Concentration of HCI 45, I mL 1.2 mol/L 22.3°C Initial temperature of HCI Trial 2 lol mol/L 21.9°C 63 mL 45. Iml 1,2 mol/L 22.5°C 45.2 mL 27.5° 22.2°C 5.3°C 90.3 mL 4.18 Jg! °C! Volume of HCI 45.3 ml Final temperature of mixture Average initial temperature (HCl and NaOH) Ti Temperature change, (47) 28.6°C...
A 100.0 mL of 0.50 M HCl at is reacted with 125.0mL of 0.50 M NaOH...
A 100.0 mL of 0.50 M HCl at is reacted with 125.0mL of 0.50 M NaOH in a calorimeter whose heat capacity is 500 J/C. What will the maximum temperature reached by the resulting solution if the initial temperature for the solution is 20.0°C? (Assume that the specific heat of the final solution is 4.18 J/g·°C, and that the density of the final solution is that of water.) The enthalpy change of HCl acid is neutralized by NaOH is –56...
please help with filling out tables for Parts A and B my data is all laid...
please help with filling out tables for Parts A and B
my data is all laid out
on
the bottom page
equation 5 is
NaOH(s)---->Na+(aq) + OH-(aq)
Calculations and Results Part A: Specific Heat Capacity of a Metal (Assume =41841/ Mass of water 39.7g 67.5°C 5.3°C Temperature change of the metal Temperature change of the water Heat transferred to the water Heat transferred to the metal Specific heat capacity of the metal Approximate molar mass of metal (Eqn 5) Identity...
Mass of beaker plus solid Mass of water,mno 1.229 4,298-g 41-949 Mass of solid, m Initial...
Mass of beaker plus solid Mass of water,mno 1.229 4,298-g 41-949 Mass of solid, m Initial temperature Final temperature a1,0 for the reaction (Eq. 1 ) (SH. = 4.18 J/g°C) ΔH for the reaction (Eq.5) The quantity you have just calculated is approximately" equal to the heat of solution of your sample. Calculate OC - joules joules the heat of solution per gram of solid sample. The solution reaction is endothermic exothermic. (Underline the correct answer.) Give your reasoning. Solid...
please answer for a thumbs up! 1. Given the standard enthalpy changes for the following two...
please answer for a thumbs up! 1. Given the standard enthalpy changes for the following two reactions: (1) Ni(s) + Cl2(g)--->NiCl2(s)...... ΔH° = -305.3 kJ (2) Fe(s) + Cl2(g)-->FeCl2(s)......ΔH° = -341.8 kJ what is the standard enthalpy change for the reaction: (3) Ni(s) + FeCl2(s)--->NiCl2(s) + Fe(s)......ΔH° = ? ____ kJ 2- When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. In the laboratory...
EXPERIMENT #9 DETERMINING THE ENTHALPY OF A CHEMICAL REACTION Used 50ml of NaOH. Reactions are pr...
EXPERIMENT #9 DETERMINING THE ENTHALPY OF A CHEMICAL
REACTION
Used 50ml of NaOH. Reactions are provided in second
picture.
Computer 13 14. Conduct this reaction in a fume hood or in a well-ventilated area. Repeat Step 10 to conduct the reaction and collect temperature data. DATA TABLE Reaction 2 Reaction 3 Reaction 1 Maximum temperature ('c) 35.5 C 322.47 35,6C Initial temperature ("C) Temperature change (AT) |1니 13Yoll'ugoC | 03 DATA ANALYSIS 1. Calculate the amount of heat energy, g,...
need help with calculations
V. Heat of reaction for NaOH (s) + HCI (aq) → Naci (aq) + H20 ()-dH(net) Direct determination Mass NaOH Moles NaOH = moles Mass of HCI solution Final temp. of solution Initial temp. of solution AT solution 30 23 C 4 C AH(net)(Direct) per mole NaOH Calculation Indirect determination Heat of dissolution of NaOH (s) [AH(diss)] Mass NaOH Moles NaOH moles Mass of water Final temp. of solution Initial temp. of solution AT solution AH(diss)-...
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...
Table 4.3: Enthalpy of Dissolution for a Salt Caci, Na,CO, 104,0 Volume of water 90. 1 mL Mass of water (assume a density of 1.00 g/mL) Initial temperature of water 90, 1mL 90.19 22.10 13.050g 16.5°C -5.6°C 90.1g 21.9°C 13.0489 39.6°0 17.7°C Mass of salt Final temperature of solution Change in temperature (47) qwater qcal Arxn AHS per mole of salt in kJ/mol (AH) CAIUTTeter Calorimeter constant or heat capacity of the calorimeter (NOT the specific heat) Average Ccal 31.451°0...
Table 4.2: Enthalpy of Neutralization for an Acid-Base Reaction Trial 1 Concentration of NaOH 1. i mol/L Initial temperature of NaOH 22.1°C Volume of NaOH Concentration of HCI 45, I mL 1.2 mol/L 22.3°C Initial temperature of HCI Trial 2 lol mol/L 21.9°C 63 mL 45. Iml 1,2 mol/L 22.5°C 45.2 mL 27.5° 22.2°C 5.3°C 90.3 mL 4.18 Jg! °C! Volume of HCI 45.3 ml Final temperature of mixture Average initial temperature (HCl and NaOH) Ti Temperature change, (47) 28.6°C...
please help with filling out tables for Parts A and B
my data is all laid out
on
the bottom page
equation 5 is
NaOH(s)---->Na+(aq) + OH-(aq)
Calculations and Results Part A: Specific Heat Capacity of a Metal (Assume =41841/ Mass of water 39.7g 67.5°C 5.3°C Temperature change of the metal Temperature change of the water Heat transferred to the water Heat transferred to the metal Specific heat capacity of the metal Approximate molar mass of metal (Eqn 5) Identity...
Mass of beaker plus solid Mass of water,mno 1.229 4,298-g 41-949 Mass of solid, m Initial temperature Final temperature a1,0 for the reaction (Eq. 1 ) (SH. = 4.18 J/g°C) ΔH for the reaction (Eq.5) The quantity you have just calculated is approximately" equal to the heat of solution of your sample. Calculate OC - joules joules the heat of solution per gram of solid sample. The solution reaction is endothermic exothermic. (Underline the correct answer.) Give your reasoning. Solid...
EXPERIMENT #9 DETERMINING THE ENTHALPY OF A CHEMICAL
REACTION
Used 50ml of NaOH. Reactions are provided in second
picture.
Computer 13 14. Conduct this reaction in a fume hood or in a well-ventilated area. Repeat Step 10 to conduct the reaction and collect temperature data. DATA TABLE Reaction 2 Reaction 3 Reaction 1 Maximum temperature ('c) 35.5 C 322.47 35,6C Initial temperature ("C) Temperature change (AT) |1니 13Yoll'ugoC | 03 DATA ANALYSIS 1. Calculate the amount of heat energy, g,...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago