EXPERIMENT 1: What do you think will happen to the temperature if you used 75 mL...
EXPERIMENT 1: What do you think will happen to the temperature if you used 75 mL of HCl and 75 mL of NaOH instead of the 10 mL each you used in Experiment 1?
Homework Answers
When we use 75 mL instead of 10 mL then the temperature increases as much as heat is released. This is because the reaction between NaOH and HCl is a neutralization reaction.The reaction is exothermic it means releases heat and the amount of heat released depends on the temperature and concentration.
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EXPERIMENT 1: What do you think will happen to the temperature
if you used 75 mL...
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...
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50 ml HCL solution was added to 51 ml NaOH 1. Would the following errors result...
50
ml HCL solution was added to 51 ml NaOH
1. Would the following errors result in a higher or lower heat of neutralization? a. Student transferred 40,0 mL of HCI instead of 50.0 mL H b. Student used the temperature at 15 min. as final temperature instead of using the graph. Student used the specific heat of water, 4.184 J/g°C instead of the specific heat of C. the NaCl solution, 3.98 J/g°C. If the theoretical heat of neutralization for...
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What would happen to the measured cell potentials if 30 mL solution was used in each half-cell instead of 25 mL?
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1-4 1. What would happen if you used a water-soluble pen on the chromatography paper to...
1-4
1. What would happen if you used a water-soluble pen on the chromatography paper to mark your origin line? How would this affect the Re values? 2. A student accidently adds 17 ml of NaCl to their beaker rather than the 7 mL of NaCl they were suppose to add to their beaker. How might this mistake affect their chromatogram? Do you think they would be able to obtain any data? Briefly explain your answer. 10 3. Is it...
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...
50
ml HCL solution was added to 51 ml NaOH
1. Would the following errors result in a higher or lower heat of neutralization? a. Student transferred 40,0 mL of HCI instead of 50.0 mL H b. Student used the temperature at 15 min. as final temperature instead of using the graph. Student used the specific heat of water, 4.184 J/g°C instead of the specific heat of C. the NaCl solution, 3.98 J/g°C. If the theoretical heat of neutralization for...
1-4
1. What would happen if you used a water-soluble pen on the chromatography paper to mark your origin line? How would this affect the Re values? 2. A student accidently adds 17 ml of NaCl to their beaker rather than the 7 mL of NaCl they were suppose to add to their beaker. How might this mistake affect their chromatogram? Do you think they would be able to obtain any data? Briefly explain your answer. 10 3. Is it...
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