二、 综合题字在线考试(共1道小题,共15分)三1.+H2O NaOH heat(分数:15分)完成反应式请点击输入答案 相关知识点: 试题来源: 解析 一 答案 Coko tNacy 4 Ha en ronk 一解析 反应原理,分两步理解 第步酯的水解 GHs cH3-9 t Hpo Ho aory 人 0 1 断键,酸加—OH,醇加-H 酸碱中和 CH3 1 At oh...
doi:US4372866Ehlers, JHaukelt, HSolar EnergyJ. Ehlers, H. Haukelt, Heat storage medium of NaOH-H2O-TeO2, US Patent 4372866, 1983.
这个反应过程可以表示为:NaOH(s) + H2O(l) → Na+(aq) + OH-(aq) + heat。 值得注意的是,氢氧化钠的放热升温现象不仅仅局限于与水的反应。在许多其他化学反应中,氢氧化钠同样会放热,导致温度上升。 【实际应用举例】 1.生产水泥:在水泥生产过程中,氢氧化钠被用作助熔剂。它与二氧化硅(SiO2)反应,放出...
The measured heats of dehydration vary in the 183-614kJkg(sample)(-1) range for the various samples that present also different water vapor sorption capacities (from approximate to 0.08 to approximate to 0.14 kg(H2O) kg(sample)(-1)). The water adsorption/desorption behavior of the zeolites ...
The relative deviations between the experimental and calculated values in the density and heat capacity measurements were 0.20 % and 0.49 % for NH3 + H2O + NaOH solutions and 0.10 % and 0.36 % for NH3 + H2O + KOH solutions, respectively. Also, two density prediction methods were checked ...
Olsson J, Jernqvist A, Aly G. Thermophysical properties of aqueous NaOH-H2O solu- tions at high concentrations. International Journal of Thermophysics. 1997;18(3):779-793Olsson J, Jernqvist A˚ , Aly G. Thermophysical properties of aqueous NaOH-H2O solutions at high concentrations. Int ...
At Empa, a thermo-chemical heat storage concept using an aqueous sodium hydroxide (NaOH) solution is pursued (working pair NaOH–H2O). A first prototype has been built. This paper describes this system and highlights the design and operation-related topics, emphasizing also the vacuum application...
The reaction between NaOH and H2SO4 is exothermic, which means it releases heat. The salt produced in this reaction, Na2SO4, is soluble in water. 中文回答: 化学方程式: 2NaOH + H2SO4 → Na2SO4 + 2H2O. 解释: 氢氧化钠(NaOH)是一种强碱,而硫酸(H2SO4)是一种强酸。当这两种化合物反应...
NaOH + NH4Cl = NaCl +NH3·H2O 2NaOH + CuSO4= Cu(OH)2↓+ Na2SO4 2NaOH+MgCl2= 2NaCl+Mg(OH)2↓ Inspection item Target Result Judge Appearance White White Qualified NaOH % 99.0 99.02 Qualified Na2CO3 % ≤ 0.8 0.47 Qualified NaCI% ≤ 0.05 0.01 Qualified Fe2O3%≤ 0...
Decolourisation of reddish brown Br2 Purple KMnO4 decolourises Phenol Phenylamine Benzene Substituted Benzene Primary or Secondary alcohol Aldehyde Alkene with monosubstituted or disubstituted C=C bond Purple KMnO4 decolourises CO2 evolved Terminal alkene C2H2O4 HCOOH Purple KMnO4 decolourises White ppt...