e/Rate equation

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has glosseng: The rate law or rate equation for a chemical reaction is an equation which links the reaction rate with concentrations or pressures of reactants and constant parameters (normally rate coefficients and partial reaction orders). To determine the rate equation for a particular system one combines the reaction rate with a mass balance for the system. For a generic reaction with no intermediate steps in its reaction mechanism (that is, an elementary reaction), the rate is given by :r\; =\; k[\mathrmA}]^m[\mathrmB}]^n where [A] and [B] express the concentration of the species A and B, respectively (usually in moles per liter (molarity)); m and n are the respective stoichiometric coefficients of the balanced equation only for an elementary reaction otherwise they must be determined experimentally; and k is the rate coefficient or rate constant of the reaction. The value of this coefficient k depends on conditions such as temperature, ionic strength, surface area of the adsorbent or light irradiation. For elementary reactions, the rate equation can be derived from first principles using collision theory. Again, m and n are NOT always derived from the balanced equation.
lexicalizationeng: rate equation
instance of(noun) a mathematical statement that two expressions are equal
equation
Meaning
Czech
has glossces: Rychlostní rovnice matematicky popisuje rychlost chemické reakce. Pro obecnou rovnici :n A + m B → C + D je její tvar:
lexicalizationces: rychlostní rovnice
German
has glossdeu: Ratengleichungen beschreiben die zeitlichen Konzentrationsverläufe verschiedener Spezies, zum Beispiel bei gekoppelten chemischen Reaktionen, oder bei An- und Abregungsprozessen verschiedener Niveaus bei Atomen oder Molekülen:
lexicalizationdeu: Ratengleichung
Persian
has glossfas: معادله سرعت یا قانون سرعت معادله‌ای است که سرعت یک واکنش شیمیایی را به غلظت گونه‌های واکنشگر و پارامترهای مستقل از غلظت مانند درجهٔ جزئی واکنش و ضریب سرعت ارتباط می‌دهد. برای نمونه در واکنش A + B → C معادلهٔ سرعت بصورت زیر بیان می‌شود :
lexicalizationfas: معادله سرعت
Hebrew
has glossheb: בכימיה פיזיקלית, משוואת קצב או חוק קצב הם כלים לתיאור המהירות בה מתרחשת תגובה מסוימת. למשוואה שימוש נרחב בקינטיקה כימית. משוואת הקצב מקשרת בין קצב התגובה לריכוזים או לחצים של המגיבים והתוצרים בתגובה. באופן כללי, עבור התגובה A + B → C משוואת הקצב תהיה:
lexicalizationheb: משוואת קצב
Hungarian
has glosshun: A kémiai reakciók felezési ideje (t½) alatt azt az időtartamot értjük, amennyi idő alatt a kiinduló anyag kezdeti koncentrációja (cAo) a felére csökken. A kiindulási anyag koncentrációja az idő függvényében a reakció rendűségétől függően egyenes arányosan, exponenciálisan, vagy hiperbola jelleggörbe szerint csökkenhet. A felezési idő kifejezéseit megkaphatjuk, ha a koncentráció időfüggvényekbe az alábbi helyettesítéseket elvégezzük. például az A kompnens esetén:
lexicalizationhun: felezési idő
Italian
has glossita: In chimica, lequazione cinetica è lequazione che rappresenta l'andamento della velocità di reazione in funzione delle concentrazioni dei suoi reagenti e dei suoi prodotti.
lexicalizationita: equazione cinetica
Macedonian
has glossmkd: Законот за брзината или равенката на брзина на една хемиска реакција е равенка која ја поврзува брзината на хемиската реакција со концентрациите или притисоците на реактантите и постојаните параметри (обично коефициенти на брзината и делумните редови на реакцијата). За да се одреди равенката на брзина за одреден систем, треба да се комбинират брзината на реакцијата со масината рамнотежа за системот. За генеричката реакција која е без интермедиерни чекори во својот реакциски механизам (односно, елементарна реакција), брзината е дадена со
lexicalizationmkd: Равенка на брзина на реакција
Polish
has glosspol: Równanie kinetyczne to zazwyczaj równanie różniczkowe opisujące dokładnie zmiany stężenia molowego substratów w czasie zachodzenia reakcji chemicznej.
lexicalizationpol: Równanie kinetyczne reakcji chemicznej
Portuguese
has glosspor: A equação de taxa ou "lei" de taxa para uma reação química é uma equação que relaciona a taxa de reação com concentrações ou pressões de reagentes e parâmetros constantes (normalmente coeficientes de taxa e ordens de reação parciais. Para determinar a equação de taxa para um sistema particular combina-se a taxa de reação com um balanço de massa para o sistema. Para a reação genérica sem etapas intermediárias em seu mecanismo de reação (isto é, uma reação elementar), a taxa é dada por
lexicalizationpor: equação de taxa
Chinese
has glosszho: 化学反应速率方程是利用反应物浓度或分压计算化学反应的反应速率的方程。 对于一个化学反应 mA + nB \rightarrow C\,,化学反应速率方程(与复杂反应速率方程相比较)的一般形式写作:
lexicalizationzho: 速率方程
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media:imgChemicalEquilibrium.jpg
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