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What is the eutectic temperature and the composition of the naphthalene and p-nitrotoluene system?
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∙ 11y ago
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What is the difference between eutectic and eutectoid points?
The eutectic point of a mixture is defined as the temperature at which a eutectic mixture freezes or melts. A eutectic mixture is a mixture that melts and solidifies at a single temperature that is lower than the melting points of the individual constituents.
What is the eutectic point temperature of water?
it is where a liquid solution and both pure solids exist at a fixed pressure.
Is The melting temperature of an alloy is generally lower than its constiuants?
The melting temperature of an alloy is generally lower than the melting temperature of the highest melting temperature of all of its constituents. The eutectic melting temperature is the lowest melting temperature of an alloy system and is in fact sort of defined by that optimal set of percentages of those constituents. The next obvious question is whether there are calculation methods or approximations to determine the melting range of less than "eutectic" percentages.
How does iron - magnesium and feldspars crystallize from magma?
Feldspars are the first to crystallize at the eutectic point after which the temperature drops, thus crystallizing the iron - magnesium.
What effect does temperature have on the characteristics of magama?
This is quite a complicated question because one needs to consider the temperature at which the magma forms and the temperature st which it intrudes/erupts. First let us consider the formation of magma, to make it you must melt a preexisting solid rock made up a bunch of chemical held together as minerals. Obviously if you were to melt it entirely then the overall composition would be the same as that of the rock being melted. However, when one starts to heat a rock some bits of it melt first to form a magma. Rather like how antifreeze melts ice a specific melt composition forms first (this is called a eutectic composition. If the melt then flows out of the rock, different magma will be formed from the remaining rock at higher melting temperature. The eutectic melt determines the composition of the main magma types (basalt, andesite, granite, etc) depending on the composition of the source rocks. Thus the first point is at given a certain start point chemistry, certain temperatures will produce specific magma chemistries. OK, having generated a magma, this will move up in the crust and cool. if the temperature reduces slowly as it cools then a course grained rock, if it cools fast then it will form a fine grained rock. Also the hotter the magma, the more "runny" it is when intruded or erupted.
What is the significance of eutectic point?
The eutectic point of a mixture is defined as the temperature at which a eutectic mixture freezes or melts. A eutectic mixture is a mixture that melts and solidifies at a single temperature that is lower than the melting points of the individual constituents.
What is the difference between eutectic and eutectoid points?
The eutectic point of a mixture is defined as the temperature at which a eutectic mixture freezes or melts. A eutectic mixture is a mixture that melts and solidifies at a single temperature that is lower than the melting points of the individual constituents.
What is eutectic halt?
Hay.I thick the simplest way of defining the eutectic halt is when a liquid with lets say a slope with like a 45 degree angle slowly moves to 90 and instantly moves to 180degrees (eutectic solidifying) for a long period before cooling further the longest halt will give the eutectic composition and the melting temperature when the slope is equal to zero (horizontally)SryI tried to be simple :D
What is the difference between eutectic and eutectoid?
Eutectic point is where a liquid eutectic composition cools sufficiently to solidify.Eutectoid point is where, within a solid, the material cools enough to undergo a phase transformation. e.g. austenite to cementite a
What is the eutectic pont?
Eutectic is a binary system of two substances which are miscible in all proportions in the liquid (molten) phase but do not react chemically. They have the property of lowering each others freezing point. The minimum freezing point attained is called Eutectic point and composition corresponding to Eutectic point is called Eutectic mixture. This type of system is called Eutectic system.
What is the eutectic temperature for benzoic and mandelic acid?
The eutectic temperature for benzoic acid and mendelic acid mixture is 105-106º C. This is usually about 60% mandelic acid and 40% benzoic acid.
What is the difference between pearlite and cementite?
Well, basically, pearlite is the eutectic composition of steel, with an overall composition of 0.8% carbon. It is known to consist of two phases, namely: Ferrite (Fe), the room temperature of iron and Cementite(Fe3C). Therefore, the difference between pearlite and cementite is that pearlite is a composition of steel, and cementite is a composition of Pearlite. So cementite is part of pearlite.
Why plumber's solder has a high lead content while solder used for securing electronic components has a eutectic composition?
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Eutectic temperature of Nacl and water solution?
Sodium chloride and water form a eutectic mixture. It has a eutectic point of −21.2 oC and 23.3%salt by mass.The eutectic nature of salt and water is exploited when salt is spread on roads to aid snow removal, or mixed with ice to produce low temperatures (for example, in traditional ice cream making).
How does a eutectic fridge work?
"Eutectic" refers to a mixture or alloy that has the lowest possible melting / freezing point. In a true eutectic solution, all its consituents move from solid state to liquid and vice versa simultaniously as in water. The "eutectic point" is thus the freezing / melting point of the whole solution. The term "eutectic fridge" refers to a fridge that has an internal tank filled with a eutectic solution. The fridge works normally with a compressor and coolant gas, the eutectic solution is not circulated through the evaporator. When the fridge is running, it pulls down the temperature of the eutectic tank solution, which then helps keeping the temperature low even when the fridge is not running. A poor man's eutectic would be putting a lot of bottled water in your fridge and then run the fridge until all the water is cold. Now the cold liquid helps keeping down the temperature, while cold air escapes as soon as you open the door. Eutectic fridges are often used in vehicles and boats that must be self-sufficient with their electricity. The "eutectic plate" is chilled while there is plenty of power (=the engine is running, or the sun hits the solar panels etc. ), thus enabling the user to save power at times when no charge is coming to the batteries.
What is the meaning of pro-eutectic and eutectic?
there is no difference.
What is the eutectic point temperature of water?
it is where a liquid solution and both pure solids exist at a fixed pressure.
