Teadus igapäevaelus
Why do some reactions get hot?
Combustion releases energy to the surroundings; at constant pressure this is described by a negative enthalpy change.
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Lühike vastus
Combustion releases energy to the surroundings; at constant pressure this is described by a negative enthalpy change.
Mis tegelikult toimub?
Teadus jääb meelde, kui definitsioon seotakse millegi mõõdetava või vaadeldavaga.
At constant temperature and pressure, ΔG combines enthalpy and entropy to indicate thermodynamic spontaneity.
Teadus jääb meelde, kui definitsioon seotakse millegi mõõdetava või vaadeldavaga.
Kasulik mõttepilt
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Chemical reactions rearrange bonds and redistribute energy. If the reacting system transfers energy to its surroundings as heat at constant pressure, its enthalpy change is negative.