PLEASE ANSWER G-I BEFORE you can begin the Heat of Fusion of Ice experiment you

Question

PLEASE ANSWER G-I BEFORE you can begin the Heat of Fusion of Ice experiment you MUST: 1. Solve the following problem: You will determine the Heat of Fusion of ice as follows. Weigh a dry calorimeter containing a magnetic stirring bar. Heat of Fusion of Ice Time-Temperature curve (Logger-Pro) Add the required amount of hot (60-70°C) water Ice is being added and reweigh. Start stirring. Insert a temperature sensor and "continuously" record the temperature vs time. H of hot water. After about 30 seconds start adding pieces of ice until the temperature drops to between 20 and Finaltemperature 30°C. Record this final temperature for at least 30 seconds. Make sure there is efficient stirring and all the ice has melted. Finally weigh the calorimeter and final contents. NOTE: the ice must be at oec so, if taken out of a freezer, it must be lef at room temperature and allowed to partially melt. "Dry" each ice chunk with a towel before adding to the calorimeter so that you are adding only solid, no liquid. Your collected data should look similar to the time-temperature curve above. CALCULATIONS: Specific Heat of water at room temperature is... 4.180 jg °C. The heat gained or lost by water is joules (4.180 jg °C (temperature change)(mass) Experimental Data Mass of empty calorimeter and stirrer. 787 g Mass of calorimeter, stirrer and hot water 67.56 g Mass of calorimeter, stirrer and water at the end 94.30 g Calorimeter Constant. 317 iMPC

Explanation / Answer

g) If there is no temperature lost to the surroundings, the quantity of heat gained by ice = The heat gained by water = 11624.4 + 61.36 = 11685.76 J

h) Heat of fusion = 11685.76 J / 26.74 g = 437.0 J/g

i) enthalpy = (437.0 J/g)(18 g/mol) = 7866.25 J/mol

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.