0
the atoms (or molecules) within the substance move slower, as temperature decreases.
Wiki User
∙ 13y ago
Wiki User
∙ 11y agoenthalpy will increase with decrease in temperature.
Add your answer:
Earn +20 pts
What happens to particle motion if the temperature is decreased?
The energy of the motion is decreased.
What happens to the pressure of gas when the volume is doubled and no change in Kelvin temperature?
The pressure is decreased to 50 %.
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 is the standard enthalpy of formation for butane?
the standard enthalpy change of vaporization DHov is the enthalpy change when one mole of a substance is transformed into a gas enthalpy change is the term we use to describe the energy exchange that occurs with the surroundings at a constant temperature and pressure so to work it out, use the formula DH = cmDT DH - the enthalpy change c - the specific heat capacity of butanol (kJ kg-1 °C-1) m - the mass of butanol heated (kg) DT - the change in temperature of the butanol (°C) so there is no general enthalpy change of butanol, it depends on the factors above. the specific heat capacity of butanol, the mass of butanol heated, and the change in temperature of the butanol should be given to you in order to work the enthalpy change of vaporization of butanol if there is a rise in temperature, the reaction is exothermic and if there is a drop in temperature the reaction is endothermic. exothermic reactions have a negative enthalpy change, and therefore endothermic reactions have a positive enthalpy change. hope it helped (:
What factors generally determine whether a reaction happens or not?
Enthalpy and entropy.
What happens to particle motion if the temperature is decreased?
The energy of the motion is decreased.
If air rises what happens to it's temperature?
The temperature of air is decreased.
What happens to the temperature of the air as it rises for frontal?
The temperature of air is decreased.
What happens to the volume of a gas - if the temperature is decreased?
It decreases.
What happens to the temperature of the system when the heat energy is decreased?
It drops.
What is the relationship between enthalpy and temperature?
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.
What happens to the pressure of a gas if the temperature of the gas is decreased?
the pressure will also decrease
What happens to the kinetic energy when temperature is changed?
When the temperature is increased the kinetic energy increases, and when it is decreased the kinetic energy decreases.
What happens to the pressure of gas when the volume is doubled and no change in Kelvin temperature?
The pressure is decreased to 50 %.
What happens to the mass of gas when temperature is decreased by -273 degree celsius?
The Mass of a substance will not change with a reduction of temperature … even to -273C.
What happens to water at 1 ATM preassure as the temperature is decreased from 10 degrees to -10 degrees?
It depends on the temperature scale being used.
If temperature of a gas increases and put under decreased pressure what happens?
It will start to smell. The volume will increase.
