How much heat is needed to change 7.2 kg of solid ethyl alcohol at -211°C to liquid at 50.0°C? 2.419 c. The specific heat of solid ethyl alcohol is 2.440 C. The specific heat of liquid ethyl alcohol is Show your work. Use the latent heat table shown below or press here. Latent Heats of Various Substances Melting Point (°C) Boiling Point (°C) Substance Latent Heat of Latent Heat of Fusion Vaporization kg. 2 519 4.0x105 8.6x105 Aluminum 6.6x105 10 900 Ethyl alcohol 1.1x105 -114 78.3 5.7x105 6.4x104 Carbon dioxide 1.8x105 -78 -57 Gold 1.1x105 1 948 2 700 Lead 2.5x104 327.5 8.7x105 1750 Water 3.4x105 2.3x106 100
Latent heat and phase change
A physical process in which a conversion among the basic states or phases of matter, i.e., solid, liquid, and gas takes place under the effect of a certain temperature and pressure is referred to as a phase change. Generally, the phase change of a substance occurs when heat transfer takes place between the substance and its surroundings. Based on the direction in which heat transfer takes place, different types of phase changes can occur.
Triple Point of Water
The branch of physics in which observer deals with temperature related properties is called thermodynamics.
Boiling Point of Water
Everyday examples of boiling is, boiling milk, heating water. One would have observed that when we heat water it goes through various stages and at one point bubbles show in water, and water keeps splashing with bubbles bursting, we in layman terms say that water is boiling.
Freezing Point of Water
In general, the freezing point of water is 0° Celsius, or 32° Fahrenheit. This is the temperature at which water will ordinarily change from its liquid state to its solid state (ice). However, there are certain conditions that can affect the freezing point of water. For example, a liquid may be supercooled or contain impurities so that it does not freeze at the ordinary freezing point.
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