Phase Diagrams And Heating Cooling Curves Youtube In this video, phase changes were explained leading to interpretation of phase diagram of water and carbon dioxide. heating and cooling curve of a substance. Creating and interpreting phase change diagrams and heating cooling curves.
Phase Diagrams And Heating Curves Youtube The basics of the phase diagram and the heating curve are explained, including in the latter case, the concept of latent heat. these are two different types. Boil water. heat steam from 100 °c to 120 °c. the heat needed to change the temperature of a given substance (with no change in phase) is: q = m × c × Δ t (see previous chapter on thermochemistry). the heat needed to induce a given change in phase is given by q = n × Δ h. using these equations with the appropriate values for specific. Heating and cooling curves. the experimental set up we imagined would generate a heating curve. heating and cooling curves are graphs. they plot a substance's temperature (y axis) against heat (x axis). for heating curves, we start with a solid and add heat energy. for cooling curves, we start with the gas phase and remove heat energy. How much energy in kilojoules is released when 25.0 g of ethanol vapor at 93.0 °c is cooled to 11.0 °c? ethanol has mp = 114.1 °c, bp = 78.3 °c, Δhvap = 38.56 kj>mol, and Δhfusio#n = 4.93 kj>mol. the molar heat#capacity is 112.3 j>1k mol2 for the liquid and 65.6 j>1k vapor.
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