It varies with the type of material and the nature of the phase transition. A small amount of ice is placed in a calorimeter containing water. Latent heat plays a decisive role in the global energy balance of our planet. This example problem demonstrates how to calculate the amount of energy required to melt a sample of water ice. Thermal physics, ebook, 6 chapters, 34 pages lincoln central. The discovery of latent heat 250 years ago citeseerx. For a transition from solid to liquid, l is known as the latent heat of fusion, l. Download complete pdf book, the epub book or the kindle book.
By knowing the masses of the ice, the water, and the calorimeter, and the resulting temperature change after the ice melts, the latent heat of fusion of ice is found. Physics lab latent heat of fusion of ice documents and ebooks. Engage your students during remote learning with video readalouds. Latent heat of fusion and vaporization, specific heat.
In this lab, the heat of fusion for water will be determined by monitoring the temperature changes while a known mass of ice melts in a cup of water. The experimentally determined value for heat of fusion will be compared with the accepted. To find the specific latent heat of fusion of ice heat ice scribd. Latent heat energy must be removed from substance example how much heat is released from 50g of water as it a changes from liquid to ice at 0oc. Read the introduction to the heat of fusion of ice writeup in your lab manual p 85. Heat of fusion of ice prelab utk department of physics. Experiment 4 heat of fusion and melting ice experiment in this lab, the heat of fusion for water will be determined by monitoring the temperature changes while a known mass of ice melts in a cup of water. The aim of the experiment is to obtain a value for latent heat of fusion of water and the specific heat. Determine the mass m ice of ice in the bucket at the moment it is brought in the room neglecting. Experiment 4heat of fusion and melting ice experiment. This physics video tutorial explains how to solve problems associated with the latent heat of fusion of ice and the latent heat of vaporization of ice. Ice of mass m and specific latent heat l at its melting point t0 into a.
Theory when heat is added to a substance, a temperature change is generally observed to occur. Cheney, department of physics and astronomy, 401 nielsen physics building, the university of tennessee, knoxville, tennessee 379961200. Calorimeter of mass mc and specific heat capacity cc and initial warm. Do not set books, papers or any other flammable materials close to the hot plates. Heat of fusion is the amount of heat energy required to change the state of matter of a substance from a solid to a liquid.
Heat from the air transfers to the ice causing it to melt. Heat capacity, specific heat, and heat of transformation book. C to calculate the latent heat of fusion of ice and compare it to the handbook value. The molar heats of fusion and solidification of a given substance can be used to calculate the heat absorbed or released when various amounts are melted or frozen. To find the specific latent heat of fusion of ice free download as word. Heating curves show the phase changes that a substance undergoes as heat is continuously absorbed. Its units are usually joules per gram jg or calories per gram calg. Specific heat capacity and latent heat lab report fy003. The heat thermal energy required for an objects phase transition is.
1039 1500 1153 18 1125 1337 1043 245 1406 433 1014 496 19 410 167 67 1131 245 563 1256 737 508 677 592 897 1177 446 709 333 694 740 980 1369 1060 1329 1063 283 775 195 844 993 928 860 295