Viscosities and Densities of Highly Concentrated Aqueous MOH Solutions (M+ = Na+, K+, Li+, Cs+, (CH3)4N+) at 25.0 °C
Viscosities and Densities of Highly Concentrated Aqueous MOH Solutions (M+ = Na+, K+, Li+, Cs+, (CH3)4N+) at 25.0 °C
复制标题
25.0 °C 时高浓度 MOH 水溶液（M+ = Na+、K+、Li+、Cs+、(CH3)4N+）的粘度和密度
DOI：
--
复制
发表时间：
2000
期刊：
影响因子：
--
通讯作者：
P. M. May
中科院分区：
文献类型：
--
作者：
P. Sipos;G. Hefter;P. M. May
无碳酸盐四甲基铵水溶液和碱金属氢氧化物的绝对（动态）粘度 (η) 和密度 (ρ) 已测定至饱和浓度（[NaOH] ≤ 19.l M、[KOH] ≤ 14.1 M、[LiOH] ≤ 4.8 M、[CsOH] ≤ 14.8 M 和 [(CH3)4NOH] ≤ 4.2 M）。分别使用乌氏粘度计和振动管密度计在 25.00 °C 下测量。据信粘度精确度在 0.1% 以内，密度精确度在 5 × 10-6 g cm-3 以内。等体积 MOH 溶液的密度按 (CH3)4N+ < Li+ < Na+ < K+ ≪ Cs+ 的顺序增加。 [MOH] < 4 M 溶液的粘度以相反的顺序增加，但 CsOH 溶液的粘度在非常高的浓度下变得非常大。与碱金属氢氧化物溶液相比，(CH3)4NOH 溶液的密度与浓度函数的形状也有很大不同。使用 Masson 方程将密度数据拟合至最高浓度。粘度与浓度函数表示为...
The absolute (dynamic) viscosities (η) and densities (ρ) of carbonate-free aqueous tetramethylammonium and alkali metal hydroxides have been determined up to saturation concentrations ([NaOH] ≤ 19.l M, [KOH] ≤ 14.1 M, [LiOH] ≤ 4.8 M, [CsOH] ≤ 14.8 M, and [(CH3)4NOH] ≤ 4.2 M) at 25.00 °C using a Ubbelohde viscometer and a vibrating tube densitometer, respectively. The viscosities are believed to be precise to within 0.1% and the densities to within 5 × 10-6 g cm-3. Densities of isoplethic MOH solutions increase in the order of (CH3)4N+ < Li+ < Na+ < K+ ≪ Cs+. Viscosities for [MOH] < 4 M solutions increase in the reverse order, but the viscosities of CsOH solutions become extremely large at very high concentrations. The shape of the density vs concentration function of (CH3)4NOH solutions is also quite different when compared with the alkali metal hydroxide solutions. Density data were fitted up to the highest concentrations using the Masson equation. Viscosity vs concentration functions are represented in ...