After calculating an enthalpy of neutralization, you are told the concentration of NaOH used was 5%...
After calculating an enthalpy of neutralization, you are told the concentration of NaOH used was 5% less than indicated on its label and asked to recalculate your enthalpy of neutralization. Will the recalculated value be larger, smaller, or the same as you originally calculated?
Homework Answers
The Enthalpy of Neutralization will be less as calculated before because while calculating the enthaply of neutralization, the heat is generated due to the reaction of hydrogen ions with hydroxyl ions. So, if the concentration of hydroxyl ions was less, less amount of reactions take place, and therefore less energy is realeased.
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After calculating an enthalpy of neutralization, you are told
the concentration of NaOH used was 5%...
A a. After having completed your experiment and calculated your Enthalpy of Neutralization, e usu-you are...
A a. After having completed your experiment and calculated your Enthalpy of Neutralization, e usu-you are told concentration of the NaOH solution you used was 5% less than indicated on its label and asked to recalculate your enthalpy of neutralization. Will the recalculated cment value be larger, smaller, or the same as you originally calculated? b. Now consider the HCl you used in your experiment, if the concentration was 5% higher than that stated on its label, what will be...
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...
The enthaply of neutralization of Phosphoric Acid Please help with 1-5 The Enthalpy of Neutralization of...
The
enthaply of neutralization of Phosphoric Acid
Please help with 1-5
The Enthalpy of Neutralization of Phosphoric Acid DATA TABLE Trial 3 Trial 1 Trial 2 Maximum temperature (c) 3 Initial temperature ("C) Temperature change (AT o C 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 determining the mass, m, of the solution use 1.11 g/mL for the density. Use 4.18...
to determine the enthalpy of neutralization, you will construction a time verus temperature graph. why is...
to determine the enthalpy of neutralization, you will
construction a time verus temperature graph. why is this graph
necessary?
WA UWEP 1. To determine the enthalpy of neutralization, you will construction a time versus temperature graph. Why is this graph necessary? 2. A student added 2.500 g MgSO4(MM 120.4) to a 60.000 g water sample. The initial temperature of the water was 20.50 *C. After adding the salt, the temperature rose to 27.00°c. a) What is the value of AT?...
6. In doing the neutralization (using the same calorimeter as in problem 5) of HF with NaOH; 50.0 mL of 2.08 M NaOH...
6. In doing the neutralization (using the same calorimeter as in problem 5) of HF with NaOH; 50.0 mL of 2.08 M NaOH at 22.2°C are mixed with 50.0 ml of 2.08 M HF at 22.2°C. After the two solutions were mixed, allow to react, and come to equilibrium temperature; the final temperature was found to be 33.2°C. The resulting solution weighed 100.791 g. In order to obtain the specific heat of the resulting NaF solution: 50 mL (51.264 g)...
B. ENTHALPY OF NEUTRALIZATION NaOH temp. 29 HCl temp.: 22.0 Average temp. T: 22.06 Time Temp...
B. ENTHALPY OF NEUTRALIZATION NaOH temp. 29 HCl temp.: 22.0 Average temp. T: 22.06 Time Temp 0:30 29.7 Calorimeter mass: 3.872 200 29.7 Calorimeter + HCl mass: 54.5292 130 129.7 2:00 226 Calorimeter + HCI + NaOH mass: 105.174 2.30 22.629.7 3:00 295 3:30 225 4:00224 4:30 29.4 295. 5:00 29.3 29.4 ]296 129.3 22.0 Final pH: 2 0:30 -1:00 1:30 14:00 15:00 4:30 8 8 Calculations: Moles NaOH: Moles HCI: Limiting Reagent: Calculated molar enthalpy of neutralization: kJ/mol Literature...
5. Will the calculated molarity of NaOH be lower or higher if you use tap water...
5. Will the calculated molarity of NaOH be lower or higher if you use tap water rather than deionized water to dissolve the KHP crystals or to rinse down the walls of the flask during the titration? Tap water contains some calcium bicarbonate. The calculated molti O NAOH will be lower lose top water rother thon deionited water to dissolve the crystals 6. Write and balance the equation for a neutralization of a sulfuric acid solution of unknown concentration by...
Data Standard solution: NaOH concentration 0.25 M Volume of HCl used (Va) Initial NaOH buret reading...
Data Standard solution: NaOH concentration 0.25 M Volume of HCl used (Va) Initial NaOH buret reading Final NaOH buret reading Volume of NaOH used (Vb) Concentration of HCl (Ma) 10.00 ml 2.00 ml 16.10 ml 14.10 ml Determine the Molarity (concentration) of HCI using the data you collected and the titration formula. (The concentration of the NaOH used was 0.25M) Record your answer on your data form. United States Focus 17. It takes 75ml of a 2.5M HCl solution to...
STR Data Standard solution: NaOH concentration 025M volume of initial NaOH buret reading final NaOhH buret readingG TUTHL volume of NaOH used Concentration of HCI Calculations(Show all work and r...
STR Data Standard solution: NaOH concentration 025M volume of initial NaOH buret reading final NaOhH buret readingG TUTHL volume of NaOH used Concentration of HCI Calculations(Show all work and remember your units and significant figures) Determine the Molarity (concentration) of HCl using the data you collected and the titration formula. (The concentration of the NaOH used was 0.25M) Record your answer on your data form. Questions 1. State the purpose of this experiment The ouredse of thrs expetmeot bn of...
the concentration is .1000 M for NaOH. you cN disregard the second column. but there is...
the
concentration is .1000 M for NaOH. you cN disregard the second
column. but there is no further information.
equivalence point is 22.95. i dont have mL NaOH
this is all i have
DATA TABLE sor CHCOOH Trial Volume CHCOOH (ml) [NTOH (M) Equivalence point Md point (ML) (ml) NE 100CM 1000M a.so DATA ANALYSIS moles -(CX) 1. Calculate the number of moles of NaOH used in the reaction with the acetic acid (CH.COOH) solution . OOON NaoH 2. How...
A a. After having completed your experiment and calculated your Enthalpy of Neutralization, e usu-you are told concentration of the NaOH solution you used was 5% less than indicated on its label and asked to recalculate your enthalpy of neutralization. Will the recalculated cment value be larger, smaller, or the same as you originally calculated? b. Now consider the HCl you used in your experiment, if the concentration was 5% higher than that stated on its label, what will be...
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...
The
enthaply of neutralization of Phosphoric Acid
Please help with 1-5
The Enthalpy of Neutralization of Phosphoric Acid DATA TABLE Trial 3 Trial 1 Trial 2 Maximum temperature (c) 3 Initial temperature ("C) Temperature change (AT o C 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 determining the mass, m, of the solution use 1.11 g/mL for the density. Use 4.18...
to determine the enthalpy of neutralization, you will
construction a time verus temperature graph. why is this graph
necessary?
WA UWEP 1. To determine the enthalpy of neutralization, you will construction a time versus temperature graph. Why is this graph necessary? 2. A student added 2.500 g MgSO4(MM 120.4) to a 60.000 g water sample. The initial temperature of the water was 20.50 *C. After adding the salt, the temperature rose to 27.00°c. a) What is the value of AT?...
6. In doing the neutralization (using the same calorimeter as in problem 5) of HF with NaOH; 50.0 mL of 2.08 M NaOH at 22.2°C are mixed with 50.0 ml of 2.08 M HF at 22.2°C. After the two solutions were mixed, allow to react, and come to equilibrium temperature; the final temperature was found to be 33.2°C. The resulting solution weighed 100.791 g. In order to obtain the specific heat of the resulting NaF solution: 50 mL (51.264 g)...
B. ENTHALPY OF NEUTRALIZATION NaOH temp. 29 HCl temp.: 22.0 Average temp. T: 22.06 Time Temp 0:30 29.7 Calorimeter mass: 3.872 200 29.7 Calorimeter + HCl mass: 54.5292 130 129.7 2:00 226 Calorimeter + HCI + NaOH mass: 105.174 2.30 22.629.7 3:00 295 3:30 225 4:00224 4:30 29.4 295. 5:00 29.3 29.4 ]296 129.3 22.0 Final pH: 2 0:30 -1:00 1:30 14:00 15:00 4:30 8 8 Calculations: Moles NaOH: Moles HCI: Limiting Reagent: Calculated molar enthalpy of neutralization: kJ/mol Literature...
5. Will the calculated molarity of NaOH be lower or higher if you use tap water rather than deionized water to dissolve the KHP crystals or to rinse down the walls of the flask during the titration? Tap water contains some calcium bicarbonate. The calculated molti O NAOH will be lower lose top water rother thon deionited water to dissolve the crystals 6. Write and balance the equation for a neutralization of a sulfuric acid solution of unknown concentration by...
Data Standard solution: NaOH concentration 0.25 M Volume of HCl used (Va) Initial NaOH buret reading Final NaOH buret reading Volume of NaOH used (Vb) Concentration of HCl (Ma) 10.00 ml 2.00 ml 16.10 ml 14.10 ml Determine the Molarity (concentration) of HCI using the data you collected and the titration formula. (The concentration of the NaOH used was 0.25M) Record your answer on your data form. United States Focus 17. It takes 75ml of a 2.5M HCl solution to...
STR Data Standard solution: NaOH concentration 025M volume of initial NaOH buret reading final NaOhH buret readingG TUTHL volume of NaOH used Concentration of HCI Calculations(Show all work and remember your units and significant figures) Determine the Molarity (concentration) of HCl using the data you collected and the titration formula. (The concentration of the NaOH used was 0.25M) Record your answer on your data form. Questions 1. State the purpose of this experiment The ouredse of thrs expetmeot bn of...
the
concentration is .1000 M for NaOH. you cN disregard the second
column. but there is no further information.
equivalence point is 22.95. i dont have mL NaOH
this is all i have
DATA TABLE sor CHCOOH Trial Volume CHCOOH (ml) [NTOH (M) Equivalence point Md point (ML) (ml) NE 100CM 1000M a.so DATA ANALYSIS moles -(CX) 1. Calculate the number of moles of NaOH used in the reaction with the acetic acid (CH.COOH) solution . OOON NaoH 2. How...
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