网站首页  情感咨询  情感美文  情感百科  情感生活  学习充电  旧版美文

请输入您要查询的词汇:

 

词汇 Standard heat of formation
分类 英语词汇 英语翻译词典
释义

Standard heat of formation

英语例句库

A simple method for calculating the standard heats of formation of organic compounds containing carboxide using the inductive effect index is built up.

利用诱导效应指数建立了一个含羰基有机化合物的标准生成热的简单计算方法。

中文百科

标准摩尔生成焓 Standard enthalpy of formation

(重定向自Standard heat of formation)

标准摩尔生成焓,也称标准生成焓Standard enthalpy of formation)、标准生成热Standard heat of formation),符号为 ΔfHm 或 ΔHf,单位为kJ/mol(又作kJ·mol),指在标准状态(101.3 kPa;25 ℃)下,生成1摩尔纯净物质放出(符号为负)或者吸收(符号为正)的热量。

英语百科

Standard enthalpy of formation 标准摩尔生成焓

(重定向自Standard heat of formation)
Standard enthalpy change of formation in Born–Haber diagram for lithium fluoride.

The standard enthalpy of formation or standard heat of formation of a compound is the change of enthalpy during the formation of 1 mole of the compound from its constituent elements, with all substances in their standard states at 1 atmosphere (1 atm or 101.3 kPa). Its symbol is ΔHo
f
or ΔfH. The superscript theta (zero) on this symbol indicates that the process has occurred under standard conditions at the specified temperature (usually 25 °C or 298.15 K). Standard states are as follows:

随便看

 

依恋情感网英汉例句词典收录3870147条英语例句词条,基本涵盖了全部常用英语单词的释义及例句,是英语学习的有利工具。

 

Copyright © 2004-2024 Yiyi18.com All Rights Reserved
京ICP备2021023879号 更新时间:2025/8/8 1:10:38