a. Sketch a cooling curve as you go from a gas to a solid for a...

a. Sketch a cooling curve as you go from a gas to a solid for a pure substance.

b. Label each segment.

c. Explain the regions.

d. Why are there slope changes in your curve?

e. Describe what is happening on a cooling curve when you have a level, horizontal line (no change in temperature over time).

Solutions

Expert Solution

The initial point of the graph is the starting temperature of the matter, here noted as the "pouring temperature". When the phase change occurs there is a "thermal arrest", that is the temperature stays constant. This is because the matter has more internal energy as a liquid or gas than in the state that it is cooling to. The amount of energy required for a phase change is known as latent heat. The "cooling rate" is the slope of the cooling curve at any point.

In the part of the curve where the temperature decreases, the kinetic energy also decreases while the potential energy stays the same. However, at the phase transition, where the curve is flat, the kinetic energy stays the same while the potential energy decreases

queen_honey_blossom answered 1 year ago

Next > < Previous

Related Solutions

Unlike on the liquid-gas coexistence curve, on the liquid-solid coexistence curve, we can assume that the...

Unlike on the liquid-gas coexistence curve, on the liquid-solid coexistence curve, we can assume that the latent heat and change in volume are approximately independent of temperature. With this in mind, derive a relationship for pressure as a function of temperature on the liquid-solid coexistence curve

Construct a cooling curve (looks the same as a heating curve) for a substance with a...

Construct a cooling curve (looks the same as a heating curve) for a substance with a molar mass of 200 that has a gas phase specific heat capacity of 2.9 J/g-K, a boiling point of 525 K, a liquid phase specific heat capacity of 3.24 J/g-K, a freezing point of 352 K, a solid phase specific heat capacity of 3.3 J/g-K and molar enthalpies of fusion and condensation of -14.3 kJ/mol and -46.4 kJ/mol. Also what is the difference between...

2 a) Draw a neat sketch of Hauled Container System. b) Municipal solid waste from the...

2 a) Draw a neat sketch of Hauled Container System. b) Municipal solid waste from the Al-Khuwair area is to be collected in hauled containers in conjunction with stationary compactors. It is estimated that the average time to drive from garage to the first container location (t1) and from the last container F/QAP/021/001 2 location to the garage (t2) each day will be 20 min and 25 min respectively. If the average time required to drive between the containers is...

Gas Transport: A trout swims from its normal cold water habitat into a warm water cooling...

Gas Transport: A trout swims from its normal cold water habitat into a warm water cooling pond. Clearly this is a dangerous situation. Heat shock isn’t an issue. It isn’t that warm. But it is still quite a bit warmer than the cold, fast, highly mixed stream that the trout was in before. So, what about the pond water makes it dangerous? In terms of the trout’s blood will the trout be able to extract what it needs from the...

Sketch the graph of the curve ? = 1 + sin ? for 0 ≤ ?...

Sketch the graph of the curve ? = 1 + sin ? for 0 ≤ ? ≤ 2? ? b) Find the slope of the tangent line to this curve at ? = 4 . c) Find the polar coordinates of the points on this curve where the tangent line is horizontal.

Solid diiodine pentoxide reacts with carbon monoxide gas to form solid iodine and carbon dioxide gas....

Solid diiodine pentoxide reacts with carbon monoxide gas to form solid iodine and carbon dioxide gas. How much solid iodine is produced when 50.0 g of diiodine pentoxide reacts with excess carbon monoxide?

Uranium hexafluoride (UF6) sublimes from a solid to a gas and boils at a very low...

Uranium hexafluoride (UF6) sublimes from a solid to a gas and boils at a very low temperature of 56.5 oC. UF6 is used in the enrichment process of the production of fuel in nuclear reactions. At 56.5 oC and 1.00 atm, what is the density (in g/L) of UF6? = 13g/l A 2.4 L sample of gas is placed in a container at 25oC and 2 atm of pressure. If the temperature is raised to 50oC and the volume is...

Curve sketching: Choose two of the functions to sketch a graph. you should include the following...

Curve sketching: Choose two of the functions to sketch a graph. you should include the following parts for each. a). domain b). x and y intercepts c). any asymptotes d). intervals of increase/decrease e)/ extreme values f). intervals of concavity and infection points f(x)= 2x+9 / x+3 g(x)= -2 / x+1 h(x)= x^ - 6x^2

) One of the major functions of cooling tower is to cool hot but dry gas...

) One of the major functions of cooling tower is to cool hot but dry gas flow via spray vaporization under a counter-flow mode. a);List governing mechanisms (e.g., mass, momentum and heat transfer) and major assumptions for problem simplification; b);Establish a heat transfer model of gas cooling, as well as a hydrodynamics model of droplet transport that is coupled with gas heating and vaporization

cooling a gas in a piston cylinder. if the boundary work of piston cylinder is compressed...

cooling a gas in a piston cylinder. if the boundary work of piston cylinder is compressed W = -10 kj determine if it is gained or lost by the gas.

Subjects