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Enthalpy is the amount of energy in a system and when this changes (when a reaction happens), the energy is either released (exothermic) or absorbed (endothermic) and this energy is usually released or absorbed as heat. Therefore when the enthalpy decreases, heat is released from the system making it exothermic. In contrast, when the enthalpy increases, heat is absorbed making it endothermic.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoEnthalpy of water (100% liquid, 0% steam) has a direct relation with pressure and temperature
Enthalpy of vaporisation (mixture of liquid and steam) has an inverse relation with pressure and temperature
Enthalpy of steam (100% steam, 0% liquid) at saturation has a direct relation with pressure and temperature
Enthalpy of super-heated steam (steam at a temperature above its saturation temperature) has a direct relation with temperature and an inverse relation with pressure
Wiki User
∙ 11y agoenthalpy is a diffrence of reducing temperature. and temperature is a hotness or coldness of a product or a area.
The above answer can be re-state as:
Enthalpy is a measure of the total energy inside a thermodynamic system. (emphasize on thermodynamic because enthalpy and temperature in classical way are not defined beyond chemical equilibrium). There are actually two types of enthalpy but people don't usually make a difference: formation enthalpy and sensbile enthalpy. Sensible enthalpy is the one related to temperature. Sensible enthalpy is the energy change in the system as the temperature of the system is modified. Mathematically is expressed in terms of specific heat at p=const and temperature i.e.: h=cp*T (for calorically perfect gas only). The formation enthalpy is a different story has to do with the chemical energy of the molecule (sometimes this is also called heat of formation). Hope this helps!
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What is the relationship between temperature and voltage amplification Theory and Mathematical Information?
With higher temperature, low voltage
Why you calculate enthapy?
Generally enthalpy is analgous to the energy of a material at a particular temperature and pressure. It is calculated to determine the energy a material holds, or more often, enthalpy differences are calculated to determine how much energy is required to bring a material from one temperature and pressure to another temperature and pressure.
What is the relationship between resistance and temperature?
• ntc 'negative temperature coefficient': its resistance decreases as the temperature increases• ptc 'positive temperature coefficient': its resistance increases as the temperature increases
Is the heat content of a system at a constant pressure?
Yes it is possible, for example when water freezes there is a point when the temperature remains constant however energy is released as the water condenses.
Pressure rating black iron schedule 80?
What medium and temperature as there is something called "pressure temperature relationship"
What happens to enthalpy when temperature is decreased?
the atoms (or molecules) within the substance move slower, as temperature decreases.
What is the relationship between enthalpy of atomisation of hydrogen and the bond dissociation enthalpy of the H-H bond?
the enthalpy of atomisation of hydrogen is equal and (in principle) identical to the bond dissociation enthalpy of the H-H bond. However, IF the first is measured by calorimetry and the second by spectrometry there might be a systematic difference.
What is the relationship between the enthalpy h and entropy s of a reaction that is spontaneous at higher temperatures but not at lower temperatures?
-H, +S
What is the relationship between temperature and viscosity?
There is an inverse relationship between temperature and viscosity. That is, as the temperature increases, the viscosity decreases (the fluidity increases. However, the exact nature of the relationship is far from straightforward.
What is the relationship between elevations and climate?
The relationship between elevation and climate has to do with temperature. The higher up the elevation is the colder the temperature is.
Is the relationship linear between density and temperature?
The relationship between density and temperature is linear. In a thermal expansion, density will decrease and temperature increases and vice versa.
What is relation between hydration energy lattice energy and enthalpy of solution?
enthalpy change of solution=enthalpy change of hydration - enthalpy change of lattice
Why is the enthalpy of sublimation is equal to the sum of enthalpy of fusion and enthalpy of vaporization?
Enthalpy is a state function, and to a first approximation does not depend on temperature. So the change in enthalpy to go from solid to a gas directly (sublimation) at some temperature is equal to the sum of the enthalpies associated with going from a solid to a liquid (fusion) and going from a liquid to a gas (vaporization) at other temperatures.
What relationship does Charle's law describe?
The relationship between temperature and volume
What relationship does Charles's law describe?
The relationship between temperature and volume
What is relationship between temperature and elevation?
Temperature decreases as the elevation increases.
What is the relationship between size and temperature?
Temperature influences glacier size.
