define in detail Heat Evolved or Reasled
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Hiii dear here is your answer
A chemical reaction or physical change is endothermic if heat isabsorbed by the system from the surroundings. ... A chemical reaction or physical change is exothermic ifheat is released by the system into the surroundings.
Hope it's help u
A chemical reaction or physical change is endothermic if heat isabsorbed by the system from the surroundings. ... A chemical reaction or physical change is exothermic ifheat is released by the system into the surroundings.
Hope it's help u
Neeraj723:
thanx dear
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The standard heat of formation is defined as the amount of heat absorbed or evolved at 25° C (77° F ) and at one atmosphere pressure when one mole of a compound is formed from its constituent elements, each substance being in its normal physical state (gas, liquid, or solid).
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IT MAY HELPS TO U ^_^
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