"मानक संभवन पूर्णोष्मा": अवतरणों में अंतर
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पंक्ति 6:
#किसी आदर्श [[विलयन]] में घुले हुए विलेय के लिये : सान्द्रण 1 mole/liter, दाब १ वायुमण्डलीय
#For a pure substance or a [[solvent]] in a condensed state (a liquid or a solid): the standard state is the pure liquid or solid under a pressure of 1 atm
#For an element: the form in which the element is most stable under 1 atm of pressure. One exception is [[phosphorus]], for which the most stable form at 1 atm is [[black phosphorus]], but white phosphorus is chosen as the standard reference state for zero enthalpy of formation.<ref>{{Cite web |url=http://books.google.co.kr/books?id=fJWpg4ZJ2esC&pg=PA547&lpg=PA547&dq=standard+exception+white+phosphorus+enthalpy&source=bl&ots=W76OtR_Hr3&sig=GFbrpTTGMookqRUlf2lxWsdajCQ&hl=ko&sa=X&ei=KJcnUILTN4OkiQfbkoGgBA&ved=0CGUQ6AEwCQ#v=onepage&q=standard%20exception%20white%20phosphorus%20enthalpy&f=false |title=Principles of Modern Chemistry 547p |access-date=8 मार्च 2016 |archive-url=https://web.archive.org/web/20131110032001/http://books.google.co.kr/books?id=fJWpg4ZJ2esC&pg=PA547&lpg=PA547&dq=standard+exception+white+phosphorus+enthalpy&source=bl&ots=W76OtR_Hr3&sig=GFbrpTTGMookqRUlf2lxWsdajCQ&hl=ko&sa=X&ei=KJcnUILTN4OkiQfbkoGgBA&ved=0CGUQ6AEwCQ#v=onepage&q=standard%20exception%20white%20phosphorus%20enthalpy&f=false |archive-date=10 नवंबर 2013 |url-status=
उदाहरण के लिये, [[कार्बन डाईऑक्साइड|कार्बन डाई आक्साइड]] की मानक संभवन पूर्णोष्मा, निम्नलिखित अभिक्रिया की पूर्णोष्मा के बराबर होगी। (उपरोक्त स्थितियों के अन्तर्गत)
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