Use your data from table 8-3 to determine delta H solution for your unknown salt.
I've tried a few different
things but can't seem to come up with the right answers
Homework Answers
Trial 1
Heat change in solution (q) = mass of solution × specific heat × temperature change
= (5.418+50) × 4.184× ( 16 - 22)
= 55.418 × 4.184 × (- 6)
= - 1391.2 J.
Heat change in dissolution ( -qsol) = - q = 1391.2 J.
So, =
(1391/5.148) = 270.24 J/g.
Trial 2
qsol = (5.032+50) × 4.184 × (16 -22)
= 55.032 × 4.184 × (-6)
= - 1381.52 J.
So, Heat change in dissolution (qsol) = - q = 1381.52 J.
sol
= ( qsol/m) = (1381.52/5.032) = 274.54 J/g.
Add Answer to:
Use your data from table 8-3 to determine delta H solution for
your unknown salt.
I've...
Question #4 One way to limit the choices for your unknown is to consider the sign...
Question #4 One way to limit the choices for your unknown is to consider the sign of AHSoln. Considering your results from Table 8-3 and the table of heats of solution provided below, which of the following are possibilities for your salt considering only the sign? Trial #1 Trial #2 mass of solid mass of water. Tinitial final 5.027 g 50.0 g 21.0 °C 31.0°C 5.012 g 50.0 g 21.0 °C 30.5 °C Salt Na2CO3 KCI NH4Cl AHgoln (J/g) -267...
I can't figure out how to do question 5 (part 1 and 2) and question 6,...
I can't figure out how to do question 5 (part 1 and 2) and
question 6, could you provide explanation
Question #4 One way to limit the choices for your unknown is to consider the sign of AHgoln. Considering your results from Table 8-3 and the table of heats of solution provided below, which of the following are possibilities for your salt considering only the sign? mass of solid mass of water. Tinitial Trnal Salt Trial #1 5.029 9 5...
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 ....
Suggested Data Table (Partially completed) 1 2 3 4 5 6 7 8 9 10 11...
Suggested Data Table
(Partially completed)
1
2
3
4
5
6
7
8
9
10
11
Vol HX
Init., mL
Vol
OH–
added for this
increment, mL
Total
Vol OH–, mL
Total
Vol
Soln, mL
[HX]i
[X–]eq
[HX]eq
[X–]/[HX]
log
Meas'd
pH
Calc'd
pKa
0
50.0
0.0
0.0
50.0
---
---
---
---
---
---
---
1
50.0
10.0
10.0
60.0
2
50.0
5.0
15.0
65.0
3
50.0
5.0
20.0
70.0
4
50.0
10.0
5
50.0
6
50.0
please help...
compare your own group's value with the known value (6.01 KJ/Mol) of delta H fusion known...
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KJ/Mol) of delta H fusion
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Get the average of delta H from both trials using the data table above. Then solve...
Get the average of delta H from both trials using the data table
above. Then solve for q-surroundings using the formula and the
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Data Table 1. Mass of empty calorimeter (8) 2. Mass of calorimeter + acid (8) 3. Mass of acid (2-1) (b) 4. Mass of Mg ribbon (8) 5.T(C) 6. T (C) Trial 1 Trial 2 63.357 1163.340 212.343 213. 112 -49.9186 49.772 0.15 0.15 21.87 23.69 36.13 134,37 Calculations Assumptions...
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Question #5 In this question you will use your values from questions 2 and 3 to determine the value of AS° assuming the equilibrium constant, K, is equal to the concentration of urea in the saturated solution. Part 1: Determine the values of AS° in J/Kmol in both trials by assuming K = [urea). Trial #1 Trial #2 ASO J/Kmol This result is out of range. J/Kmol This result is out of range. Submit Check your answers. Part 2: Determine...
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A. Precipitation of CaC,O, H,O from the Salt Mixture Unknown number Trial 1 Trial 2 1. Mass of beaker (g) 59.45 59.45 5.oS Mass of beaker and salt mixture (g) 2. 3. Mass of salt mixture (g) I, oo oS 4. Mass of filter paper (g 5. Mass of filter paper and product after air-dried or oven-dried (g) 0, 35 6. Mass of dried product (g) 7....
Data and Results: Calorimetry A. Specific Heat: Unknown metal number Unknown solid number Trial 2...
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DATA TABLE Trial 3 Trial 1 Trial 2 Maximum temperature ("С)| 29.8°CI Initial temperature (C) 21C 'emperature change (AT) I 궁3°CI 300:1 29.70C 19.8"C T9C 13.20g| IL 8°Cİ I. .30u meles DATA ANALYSIs 1. Write the balanced equation for the reaction of phosphoric acid and sodium hydroxide. 2. Use the equation below to calculate the amount of heat ener 2. Use the cqdation below o Clieulate the amdiny , produced in the reaction. In determining the...
Question #4 One way to limit the choices for your unknown is to consider the sign of AHSoln. Considering your results from Table 8-3 and the table of heats of solution provided below, which of the following are possibilities for your salt considering only the sign? Trial #1 Trial #2 mass of solid mass of water. Tinitial final 5.027 g 50.0 g 21.0 °C 31.0°C 5.012 g 50.0 g 21.0 °C 30.5 °C Salt Na2CO3 KCI NH4Cl AHgoln (J/g) -267...
I can't figure out how to do question 5 (part 1 and 2) and
question 6, could you provide explanation
Question #4 One way to limit the choices for your unknown is to consider the sign of AHgoln. Considering your results from Table 8-3 and the table of heats of solution provided below, which of the following are possibilities for your salt considering only the sign? mass of solid mass of water. Tinitial Trnal Salt Trial #1 5.029 9 5...
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 ....
Suggested Data Table
(Partially completed)
1
2
3
4
5
6
7
8
9
10
11
Vol HX
Init., mL
Vol
OH–
added for this
increment, mL
Total
Vol OH–, mL
Total
Vol
Soln, mL
[HX]i
[X–]eq
[HX]eq
[X–]/[HX]
log
Meas'd
pH
Calc'd
pKa
0
50.0
0.0
0.0
50.0
---
---
---
---
---
---
---
1
50.0
10.0
10.0
60.0
2
50.0
5.0
15.0
65.0
3
50.0
5.0
20.0
70.0
4
50.0
10.0
5
50.0
6
50.0
please help...
compare your own group's value with the known value (6.01
KJ/Mol) of delta H fusion
known value H₂O(s) H₂011) Alters= +6.0! QUESTIONS KI/mol 1. a. Compare your own group's value with the known value (see Section 9.6 in McMurry, Fay & Robinson, 7" Ed.) of AH (expressed in joules per mole of water). b. Compare the class average value to the known value (see Section 9.6 in Me Murry, Fay & Robinson, 7" Ed.) of AH (expressed in joules per...
Get the average of delta H from both trials using the data table
above. Then solve for q-surroundings using the formula and the
numbers from the data table above. Thanks!
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Question #5 In this question you will use your values from questions 2 and 3 to determine the value of AS° assuming the equilibrium constant, K, is equal to the concentration of urea in the saturated solution. Part 1: Determine the values of AS° in J/Kmol in both trials by assuming K = [urea). Trial #1 Trial #2 ASO J/Kmol This result is out of range. J/Kmol This result is out of range. Submit Check your answers. Part 2: Determine...
How do you calculate questions 1 - 8 for the data analysis
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A. Precipitation of CaC,O, H,O from the Salt Mixture Unknown number Trial 1 Trial 2 1. Mass of beaker (g) 59.45 59.45 5.oS Mass of beaker and salt mixture (g) 2. 3. Mass of salt mixture (g) I, oo oS 4. Mass of filter paper (g 5. Mass of filter paper and product after air-dried or oven-dried (g) 0, 35 6. Mass of dried product (g) 7....
Data and Results: Calorimetry A. Specific Heat: Unknown metal number Unknown solid number Trial 2 Trial 1 42.SI3 Mass of test tube and stopper Mass of stoppered test tube and metal Mass of calorimeter Mass of calorimeter and water Mass of water Mass of metal Initial temperature of water in calorimeter Initial temperature of metal Equilibrium temperature of metal and water in calorimeter 38.394g 53 13 g 63 to2g 0o C water (inal-onitiat oC oC Imetal qwater Specific heat of...
Please help on 4
DATA TABLE Trial 3 Trial 1 Trial 2 Maximum temperature ("С)| 29.8°CI Initial temperature (C) 21C 'emperature change (AT) I 궁3°CI 300:1 29.70C 19.8"C T9C 13.20g| IL 8°Cİ I. .30u meles DATA ANALYSIs 1. Write the balanced equation for the reaction of phosphoric acid and sodium hydroxide. 2. Use the equation below to calculate the amount of heat ener 2. Use the cqdation below o Clieulate the amdiny , produced in the reaction. In determining the...
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