The Most Tragic DeathIn the novel, chapter 36, when the golden horned beast attacked earth, Yao Rao chose to self-destruct her universe origin so that Luo Feng could kill the beast. In the...
When the stars are playing TikTokMany celebrities had stepped into the TikTok field and had different influences. For example, Xiao Zhan had a personal account on the TikTok platform, with 14.199 million followers and 183.15...
Pinyin, Initial, Final, 26 tablesThere were a total of 23 initial syllables, namely b, p, m, f, d, t, n, l, g, k, h, j, q, x, zh, ch, sh, r, z, c, s,...
What is the reaction equation and phenomenon of removing oil stains with soda ash solution?纯碱(碳酸钠)溶液去油污主要基于油脂在碱性条件下的水解反应。碳酸钠溶液中碳酸根离子水解显碱性,反应的离子方程式为:\(CO_{3}^{2 -}+H_{2}O\rightleftharpoons HCO_{3}^{-}+OH^{-}\),\(HCO_{3}^{-}+H_{2}O\rightleftharpoons H_{2}CO_{3}+OH^{-}\)。油脂在碱溶液中发生水解生成溶于水的高级脂肪酸盐和甘油,反应方程式以硬脂酸甘油酯为例:\((C_{17}H_{35}COO)_{3}C_{3}H_{5}+3NaOH \longrightarrow 3C_{17}H_{35}COONa + C_{3}H_{5}(OH)_{3}\)。
现象是当纯碱溶液与油污接触时,油污逐渐被溶解、分散,原本有油污的表面(如厨房灶台、油烟机等)经过擦拭后变得干净。如果油污较厚,可能需要一定的反应时间,在反应过程中,随着油污的分解和溶解,被油污覆盖的表面逐渐露出原本的材质,同时可能会有油腻感逐渐减轻的感觉。
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