Hi I need help with this lab My data Mass of salt: 1.8044g volume of water:...
Hi I need help with this lab
My data
Mass of salt: 1.8044g volume of water: 74.5ml Initial temp: 21.1 c Final temp: 19.4 c Water constant: 4.184 Molar mass: 101.1
I need to solve for Heat association with the solution of the salt(kj)
Enthalpy of solution of the salt(kj)
Enthalpy of solution of the salt (kg/g and kg/mol)
Enthalpy of solution of salt at infinate dilution (kj/mol)
% error in molar enthaply of solution
Please show your work so I can work through other trials thank you in advance!
Homework Answers
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Hi I need help with this lab
My data
Mass of salt: 1.8044g volume of water:...
c. ENTHALPY OF SOLUTION Salt Sample: I Initial water temperature T:_21.3 Time Temp 10.30193 Calorimeter mass:...
c. ENTHALPY OF SOLUTION Salt Sample: I Initial water temperature T:_21.3 Time Temp 10.30193 Calorimeter mass: 3.816 193 Calorimeter + water mass: 102.483 11:30 193 Calorimeter + water + salt mass: 10.903 2.00 194 2.30 19.5 301%5 12.3 230 126 400 112.6 9.30 1127 Si og 198 119.8 (19.7 196 19.5 19.4 19.3 10:30 8 -2:00 2:30 13:00 -3:30 .4:00 4:30 5.00 Calculations: Calculated enthalpy of solution: Jig Salt is: Moles of salt: Calculated molar enthalpy of solution: J/mol ....
The salt is NH4NO3. How do I find the kJ/g and the kJ/mol? Mass of salt...
The salt is NH4NO3. How do I find the kJ/g and the
kJ/mol?
Mass of salt 1.949 Trial 1 0.426 0.426 Dissolution of Salt Heat associated with the solution of the salt (kJ) Enthalpy of solution of the salt (kJ) Enthalpy of solution of the salt (kJ/g) Enthalpy of solution of the salt (kJ/mol)
Potassium nitrate, KNO3, has a molar mass of 101.1 g/mol. In a constant-pressure calorimeter, 23.0 g...
Potassium nitrate, KNO3, has a molar mass of 101.1 g/mol. In a constant-pressure calorimeter, 23.0 g of KNO, is dissolved in 383 g of water at 23.00 °C. HO KNO,(s) + (aq) + NO3(aq) The temperature of the resulting solution decreases to 18.40 °C. Assume that the resulting solution has the same specific heat as water, 4.184 J/(g. "C), and that there is negligible heat loss to the surroundings. How much heat was released by the solution? Poln What is...
need help with Enthalpy assignment, i cant figure it out all question help Calculations PART I-Mg...
need help with Enthalpy assignment, i cant figure it out
all
question help
Calculations PART I-Mg 1. Calculate the heat energy. q. released by the reaction of Mg and HCl using the combined mass of all the reactants. 2. Calculate the enthalpy of this reaction, AH , in kJ/gram using the grams of Mg. (Note the sign of AH in your answer). 3. Calculate the enthalpy of this reaction, AHran, in kJ/mol using the molar mass of Mg. (Note the...
i need help on the second page: "calculate how many mols of HCL you used based...
i need help on the second page:
"calculate how many mols of HCL you used based on the volume
and molarity of the HCL"
and
"enthalpy of reaction" parts
Part B Heat of Reaction for HCl(aq) + NaOH (aq) NaCl (aq) + so H20 (1) Volume of 1.0 M HCl (ml) so 100 23.3 Volume of 1.0 M NaOH (ml) Mass of Solution (8) use 1.00 g/ml Ti solution (temp of HCl just before reaction) T solution (highest temp obtained)...
3 seperate questions i have been having trouble with Suppose you are investigating the reaction: M(s) + 2 HCl(aq)...
3 seperate questions i have been having trouble with
Suppose you are investigating the reaction: M(s) + 2 HCl(aq) - MC12(aq) + H2(g). You weigh out a 0.243 gram piece of metal and combine it with 63.1 mL of 1.00 M HCl in a coffee-cup calorimeter. If the molar mass of the metal is 46.62 g/mol, and you measure that the reaction absorbed 105 J of heat, what is the enthalpy of this reaction in kJ per mole of limiting...
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...
T U IF I question. The salt potassium bromide dissolves in water according to the reaction:...
T U IF I question. The salt potassium bromide dissolves in water according to the reaction: KBr(s) + (aq) + Br"(aq) (a) Calculate the standard enthalpy change AH for this reaction, using the following data: AH?KBr(s) --393.8 kJ mol! AHK (aq) --252.4 kJ mol! AH Br"(aq) --121.6 kJ mol' (b) Calculate the temperature reached by the solution formed when 53.9 g of KBr is dissolved in 0.149 L of water at 22.9 °C. Approximate the heat capacity of the solution...
Need help with my lab report for specific heat of unknown metal
Need help with my lab report for specific heat of unknown metal! I need to Find the Specific Heat of Al! I know its Q= M x Cs x Change in Temp I am getting a such a high number am just confused if its right. Here is what I got in Lab: Aluminum Mass of Metal (Mm): 6.128g Mass of water (Mw) : 25 mL Temp of water in calorimeter: 23.6 C Temp of metal in water-bath: 100 C...
need help!! DATA (20 pts): Avg. Mass of Evap. Dish (empty) Mass of Salt Mass of...
need help!!
DATA (20 pts): Avg. Mass of Evap. Dish (empty) Mass of Salt Mass of Salt + Evaporating Dish (after evaporation) Molar Solubility Of Salt Ksp for Salt BaSO4 10.01342 ing 10.5 mg CaSO4 In the space below, show your work for the calculations in the Data Table (15 pts): PROCEDURE: 1) (Preparing a saturated solution) 1-a. In a large test tube, mix a few grains of the first salt with 20 ml of water and stir or agitate....
c. ENTHALPY OF SOLUTION Salt Sample: I Initial water temperature T:_21.3 Time Temp 10.30193 Calorimeter mass: 3.816 193 Calorimeter + water mass: 102.483 11:30 193 Calorimeter + water + salt mass: 10.903 2.00 194 2.30 19.5 301%5 12.3 230 126 400 112.6 9.30 1127 Si og 198 119.8 (19.7 196 19.5 19.4 19.3 10:30 8 -2:00 2:30 13:00 -3:30 .4:00 4:30 5.00 Calculations: Calculated enthalpy of solution: Jig Salt is: Moles of salt: Calculated molar enthalpy of solution: J/mol ....
The salt is NH4NO3. How do I find the kJ/g and the
kJ/mol?
Mass of salt 1.949 Trial 1 0.426 0.426 Dissolution of Salt Heat associated with the solution of the salt (kJ) Enthalpy of solution of the salt (kJ) Enthalpy of solution of the salt (kJ/g) Enthalpy of solution of the salt (kJ/mol)
Potassium nitrate, KNO3, has a molar mass of 101.1 g/mol. In a constant-pressure calorimeter, 23.0 g of KNO, is dissolved in 383 g of water at 23.00 °C. HO KNO,(s) + (aq) + NO3(aq) The temperature of the resulting solution decreases to 18.40 °C. Assume that the resulting solution has the same specific heat as water, 4.184 J/(g. "C), and that there is negligible heat loss to the surroundings. How much heat was released by the solution? Poln What is...
need help with Enthalpy assignment, i cant figure it out
all
question help
Calculations PART I-Mg 1. Calculate the heat energy. q. released by the reaction of Mg and HCl using the combined mass of all the reactants. 2. Calculate the enthalpy of this reaction, AH , in kJ/gram using the grams of Mg. (Note the sign of AH in your answer). 3. Calculate the enthalpy of this reaction, AHran, in kJ/mol using the molar mass of Mg. (Note the...
i need help on the second page:
"calculate how many mols of HCL you used based on the volume
and molarity of the HCL"
and
"enthalpy of reaction" parts
Part B Heat of Reaction for HCl(aq) + NaOH (aq) NaCl (aq) + so H20 (1) Volume of 1.0 M HCl (ml) so 100 23.3 Volume of 1.0 M NaOH (ml) Mass of Solution (8) use 1.00 g/ml Ti solution (temp of HCl just before reaction) T solution (highest temp obtained)...
3 seperate questions i have been having trouble with
Suppose you are investigating the reaction: M(s) + 2 HCl(aq) - MC12(aq) + H2(g). You weigh out a 0.243 gram piece of metal and combine it with 63.1 mL of 1.00 M HCl in a coffee-cup calorimeter. If the molar mass of the metal is 46.62 g/mol, and you measure that the reaction absorbed 105 J of heat, what is the enthalpy of this reaction in kJ per mole of limiting...
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...
T U IF I question. The salt potassium bromide dissolves in water according to the reaction: KBr(s) + (aq) + Br"(aq) (a) Calculate the standard enthalpy change AH for this reaction, using the following data: AH?KBr(s) --393.8 kJ mol! AHK (aq) --252.4 kJ mol! AH Br"(aq) --121.6 kJ mol' (b) Calculate the temperature reached by the solution formed when 53.9 g of KBr is dissolved in 0.149 L of water at 22.9 °C. Approximate the heat capacity of the solution...
need help!!
DATA (20 pts): Avg. Mass of Evap. Dish (empty) Mass of Salt Mass of Salt + Evaporating Dish (after evaporation) Molar Solubility Of Salt Ksp for Salt BaSO4 10.01342 ing 10.5 mg CaSO4 In the space below, show your work for the calculations in the Data Table (15 pts): PROCEDURE: 1) (Preparing a saturated solution) 1-a. In a large test tube, mix a few grains of the first salt with 20 ml of water and stir or agitate....
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