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enthalpy of solution
相关语句
  溶解焓
     The enthalpy of solution is 24.1KJ/Mol.
     溶解焓变为24.1kJ/mol。
短句来源
     Moreover, the enthalpy of solution of Zn(Leu) SO_4·0 5H_2O in water has been measured at 298 15 K to be (3 17±0 09) kJ·mol -1. The standard enthalpy of formation of Zn(Leu) 2+(aq) has been calculated to be (-1088 26±4 28) kJ·mol -1.
     同时测定了Zn(Leu)SO4 ·0 5H2 O 2 98 15K时在纯水中的溶解焓为(3 17± 0 0 9)kJ·mol-1,计算了Zn(Leu)2 +(aq)的标准生成焓为( - 10 88 2 6± 4 2 8)kJ·mol-1.
短句来源
     The partition coefficient , ionization constant , melting point , contact angle and molar enthalpy of solution of TM from preformulation studies were respectively, 23.65, 9.76, 185.3℃, 63.52° and 39.35KJ/mol .
     在处方前研究中,经测定,TM的油水分配系数为23.65,电离常数pK_a为9.76,熔点为185.3℃,接触角为63.52°,摩尔溶解焓为39.35KJ/mol。
短句来源
     Moreover, the enthalpy of solution of Zn(Val)SO_4·H_2O in water has been measured at 298.15 K. The standard enthalpy of formation of Zn(Val) 2+(aq) has been calculated.
     同时测定了 Zn(Val) SO4 · H2 O于 2 98.1 5 K时在纯水中的溶解焓为 (2 8.4 6± 0 .0 8) k J· mol-1,计算了 Zn(Val) 2 +(aq)的标准生成焓为 (-5 69.71± 3 .84 ) k J· mol-1.
短句来源
     The performance of the apparatus was evaluated by measuring the enthalpy of solution of KC1 in water at T = 298.15 K.
     在温度为298.15 K时,通过测量氯化钾在水中的溶解焓的标准方法来评价这套装置的性能。
短句来源
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  “enthalpy of solution”译为未确定词的双语例句
     The value for the specific heat capacity of water, C_p(298.15K), was obtained to be(4.176±0.0126)J/k·g for measurements with the adiabatic calorimeter, and for the enthalpy of solution of KCl, AH(200 H_2O, 298.15k) was(17.556±0.011)KJ/mol for measurements with the isoperibol calorimeter.
     在前一种情况下,用水来标定量热计,所得结果为C_p(25℃)=0.9981±0.0030Cal/g·℃; 在后一种情形下,用Kcl来标定,得▽H(200H_2O·298.15k)=17.556±0.011KJ/mol。
短句来源
     mol-1 for the enthalpy of solution of potassium chloride in water and -29729 ±31 J . mol-1 for the enthalpy of reaction of TRIS in 0. 1008 mol/L HCl. The values are well in agreement with the published results.
     TRIS与0.1 mol/L HCI的反应焓为-29729±31J·mol~(-1),与文献值吻合,检验了该装置的可靠性.
短句来源
     The inclusion phenomenon was discussed by measuring various thermodynamics parameters such as the enthalpy of solution (ΔH), entropy of solution (ΔS), free energy of solution (ΔG).
     测定了不同温度下各包络物的包络常数。 通过测量溶液的热力学参数ΔH、ΔS、ΔG ,讨论了包络现象
短句来源
  相似匹配句对
     On the Physical Meaning of Enthalpy
     论焓的物理意义
短句来源
     The temperature Ttr, the enthalpy ?
     通过相变温区三次重复热容测量,得到相变温度Ttr、相变焓?
短句来源
     Teaching about Enthalpy
     关于焓函数的讲授
短句来源
     Development of the Enthalpy-frequency Diagram
     频图的研制
短句来源
     Analysis on enthalpy of lithium bromide solution
     溴化锂水溶液的比焓分析
短句来源
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  enthalpy of solution
Semiempirical theories and calculations based on the atom embedding method reveal high values (>amp;gt;370 kJ/mole) of the enthalpy of solution of single argon atoms in steel.
      
The partial enthalpy of solution of zinc at these low concentrations was found to be -5910 ± 200 cal per g-atom referred to solid zinc.
      
The enthalpy of solution of linear primary amines in THF was more endothermic as the alkyl chain increased and a similar behavior was observed with linear secondary and tertiary ones.
      
The enthalpy of reaction of pyridine, 2-, 3-, and 4-picoline with BH3·THF and the enthalpy of solution of the same amines in THF were determined by reaction-solution calorimetry.
      
The contributions to the enthalpy of solution due to the formation of a cavity in the solvent, ΔcavH°, and those due to the interaction of the solute with the solvent, ΔintH°, were determined.
      
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The purpose of this series is to make a thermodynamic analysis of the Fe-C system with a minimum of assumptions and to revise the equilibrium diagram of the same system in the light of the results of this investigation. In this paper, the first of the series, activities in liquid Fe-C alloys have been evaluated up to saturation, using Richardson and Dennis' data123 on dilute solutions of carbon in liquid iron and Darken and Smith's model~([1]) for carbon dissolved in austenite with certain modifications.A parameter...

The purpose of this series is to make a thermodynamic analysis of the Fe-C system with a minimum of assumptions and to revise the equilibrium diagram of the same system in the light of the results of this investigation. In this paper, the first of the series, activities in liquid Fe-C alloys have been evaluated up to saturation, using Richardson and Dennis' data123 on dilute solutions of carbon in liquid iron and Darken and Smith's model~([1]) for carbon dissolved in austenite with certain modifications.A parameter α_c defined as logγc/N_Fe~2 with reference to graphite as the standard state is plotted against N_c for both austenite and Fe-C melt in order to facilitate the evaluation of α_(Fe) by graphical integration. Smith's data~([1]) on equilibrium between austenite and gaseous mixtures (CO_2/CO, CH_4/H_2) are re-treated to yield α_c~γ-N_c~γ curves for 800° and 1000℃ as shown in Fig. 1. On the assumption that L_c~γ the relative partial molal enthalpy of carbon in austenite, does not chan preciably with temperature, the α_c~γ-V_c~γ curve for 1153℃, the iron-graphite eutectic temperature, is obtained by extrapolation and found to lie above the graphite saturation point. This fact seems to indicate that the limit of application of Darken and Smith's model is reached somewhere around N_c~γ=0.0661 (1.50%) and a point of inflection should occur at this concentration. The above-mentioned assumption has been semi-quantitatively proved in this paper and will be discussed further in another paper of this series.In a similar manner, α_c~l-N_c~l curves for liquid Fe-C alloys are drawn through the experimental points of Richardson and Dennis on equilibrium between CO_2/CO mixed gases and dilute solutions of carbon in liquid iron at 1560° and 1660℃ as shown in Fig. 1. The curves are extended up to N_c~1=0.15 on the basis of Darken and Smith's model using 3600 cals. as the energy of interaction at 1560℃ between carbon atoms in the neighbouring interstitial sites as recommended by Richardson and Dens. Then, a suitable curve is drawn between N_c~l=0.15 and the graphite saturation point for 1560℃ to meet certain requirements, and a corresponding curve for 1660℃ is obtained by extrapolation, assuming that L_c~l, the relative partial molal enthalpy of carbon in liquid iron, does not change appreciably with temperature. Thus, α_c~l-N_c~l curves for 1560° and 1660℃ are completed from low carbon concentrations up to saturation. The activities of carbon in Fe-C melts at 1600℃ with reference to graphite as the standard state are readily obtained at different carbon concentrations by interpolation, from which the reversible electromotive forces of a concentration cell of the type Fe,C|slag, C_2~2|Fe,C(sat.) have been calculated and found to agree fairly well with the experimental values obtained by and as shown in Fig. 2. This agreement may be taken as partial confirmation of the choice of N_c~l=0.15 as the limit of application of Darken and Smith's model to liquid Fe-C alloys.From α_c~l-N_c~l curves for 160°and 1660℃, L_c~l is easily calculated to be 3930 cals., and by combining this value with certain other data, the following equation is obtained:C(gr.)=C[%]; AF°=3930-9.21 T,which differs considerably from Chipman's equation AF°=8900-12.10T given in the 1951 edition of the "Basic Open Hearth Steelmaking". It is believed that the present author's equation is more reliable than Chipman's in view of the uncertainties involved in the derivation of the latter especially regarding the evaluation of the enthalpy of solution of graphite in liquid iron.By graphical integration of the Gibbs-Duhem equation, the activities of iron in Fe-C melts with pure liquid iron as the standard state are obtained at different carbon concentrations and plotted against N_c~l in Fig. 3. The α_(Fe)~l-N_c~l curve thus obtained is independent of temperature. With the aid of Fig. 3 and certain other data, the activities of iron in an Fe-C melt and austenite both saturated with graphite at the eutectic temperature are evaluated with pure γ iron as the common standard state and found to be practically equal as required by the eutectic equilibrium. This fact renders additional support to the choice of N_c~l=0.15 as the inflection point of the α_c~l-N_c~l curves.The shape of the α_c~l-N_c~l curves is briefly discussed from a structural viewpoint.

作者在本文中综合分析了关於液态铁碳合金中碳活度测定的諸家研究结果並比较其优劣. 然后根据Richardson与Dennis用CO_2/CO平衡法的实验数据,用Darken与Smith的统计模型与最少假定,导出了液态鉄碳合金中α′_c与N′_c的关系(α′_c=logγ′_c,/(N_Fe′)~2,标准状态为石墨),并温度对此关系的影响.计算结果符合於(i)鉄液内石墨溶解度的实验数据;(ii)与用电动势法测定液态铁碳合金中碳活度的实验数据;及(iii)奥氏体、铁液、石墨共晶平衡的要求. 根据本文所导出的α′_c-N′_c曲綫,作者算得石墨在鉄液内的溶解热为3930卡;然后依此及其他必需数据,导出下列关系:C(石墨)=C[%],△F°=3930-9.21T. 最后作者从液态铁碳合金结构的观点讨论了图1中α′_c-N′_c曲綫的形状.

In this work the combination of the refrigeration technique by semiconductors with calorimetry is proved to be effective through the development of a versatile semiconductor calorimetric system and the calorimet(?)ic measurements with it. Self-made semiconductor thermoelectric sensors and a semiconductor thermostat were used in this calorimetric system.The thermostat operates in a temperature ranging from 0° to 60℃.The sensitivity of the sensor is 25μv/0.001k(not amplified). The versatility of this system has...

In this work the combination of the refrigeration technique by semiconductors with calorimetry is proved to be effective through the development of a versatile semiconductor calorimetric system and the calorimet(?)ic measurements with it. Self-made semiconductor thermoelectric sensors and a semiconductor thermostat were used in this calorimetric system.The thermostat operates in a temperature ranging from 0° to 60℃.The sensitivity of the sensor is 25μv/0.001k(not amplified). The versatility of this system has been demonstrated in the ability to make precision measurements in adiabtic or in isoperibol mode.The precision of measerements is about 0.06%. The value for the specific heat capacity of water, C_p(298.15K), was obtained to be(4.176±0.0126)J/k·g for measurements with the adiabatic calorimeter, and for the enthalpy of solution of KCl, AH(200 H_2O, 298.15k) was(17.556±0.011)KJ/mol for measurements with the isoperibol calorimeter.These results are in good agreement with the values recommended by the Physical Chemistry Division of IUPAC in 1974.

本文通过半导体多用量热计的研制和实验工作,证明了半导体致冷与量热学相结合的有效性。本量热计采用了我们自己设计制造的半导体恒温槽和温差电传感器。恒温槽使用温度范围为0℃~60℃,传感器监测温差的灵敏度为25μv/0.001℃。本量热计既能以绝热法操作,也能以环境等温法操作。测试精度为0.06%左右。在前一种情况下,用水来标定量热计,所得结果为C_p(25℃)=0.9981±0.0030Cal/g·℃;在后一种情形下,用Kcl来标定,得▽H(200H_2O·298.15k)=17.556±0.011KJ/mol。所得结果与1974年IUPAC的推荐值非常符合。

Laser raman spectra of sulfur indicated that the stable sulfur in solution of thionyl chloride will still be the Sλ with a cyclic structure of eight atoms, D4d. The stronger hands for raman scattering are at 153, 218, 451 and 479cm-1. The solubility of sulfur Sλ in thionyl chloride is 0.72g-2.75g/100gSOCl2 in the range of temperature -7℃- + 30℃. The enthalpy of solution is 24.1KJ/Mol.

激光喇曼光谱表明,稳定态的硫在亚硫酰氯中仍以D_(4d)构型的八员环分子存在。其较强的喇曼散射带为153,218,451和479cm~(-1)。在-7℃—+13℃的温度区,硫在亚硫酰氯中的溶解度为0.72g—2.75g/100g SOCl_2。溶解焓变为24.1kJ/mol。

 
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