A. the acid and alkali can neutralize each other B. acid and alkali should not be mixed C. the reaction between acid and alkali is dangerous D. the neutral state is the best state 相关知识点: 试题来源: 解析 A。解析:A选项说酸和碱可以互相中和,这与实验结果“混合物变成中性”相符合。B选...
The pH value has no relation to the acid - alkali reaction 相关知识点: 试题来源: 解析 A。解析:在酸碱反应实验中,反应后pH值接近7。A选项说酸碱相互中和了,因为pH值接近7表示溶液接近中性,符合酸碱中和的结果。B选项说溶液变得更酸,与pH值接近7矛盾。C选项说溶液变得更碱,也与pH值接近7矛盾。D选项说...
The reactor has a plurality of gas-permeable plates (5, 6) which form reaction stages which are connected by overflow lines (5a, 6a). An annular duct (9) serving for gas distribution is arranged on at least one plate. The outer wall (9a) and the inner wall (9b) of the annular ...
ester - formed by reaction between an acid and an alcohol with elimination of water muton - the smallest unit of DNA where a mutation can occur U, uracil - a base containing nitrogen that is found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine ...
chemical reaction n (Chemistry) a process that involves changes in the structure and energy content of atoms, molecules, or ions but not their nuclei. Comparenuclear reaction Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000...
From a nutritional standpoint, protein quality can be quantified using the Protein Digestibility-Corrected Amino Acid Score (PDCAAS), which considers both amino acid requirements and digestibility (Schaafsma, 2000, Schaafsma, 2012). Maize has a score of approximately 0.47, and while this is ...
Acid/Alkali-Proof Fire-Resistant Paper Based on Barium Sulfate Fibers This invention relates to the waterproof agent for cement. 2 parts of dioctadecyl dimethyl ammonium chloride, 3parts of sodium hexafluoro silicate, 4 paits of calcium carbonate and 1 part of PVA are added into water and then...
Based on this, we suggest a complementary mechanism to explain the Cu isotope signatures in Group Ⅱ rocks, namely the reaction between fluid and magmas: Heavy Cu isotopes combine with SO42- to form sulfate and enter into fluids at the first stage of the interaction between magma and ...
Dimethylamine was obtained by the hydrolysis after the reaction between n-BuLi and HMPT. Alkali metal is known to decompose HMPT to produce dimethylamide ion and diamide phos- phite ion (eq 7): M Me2N1-iM1+1 -+ (Me2N)2P1-1=QM1+1 ( 7) "'CHa CHa / N""/.'- CIH2 \. LiCH...
Type of glassHeat of reaction[GJ/tGlass]Enthalpy of glass [GJ/tGlass]Enthalpy of gases emitted [GJ/tGlass]Theo. energy demand [GJ/tGlass] Soda-lime (flat/container) 0.49 1.89 0.3 2.68 Borosilicate (8 wt% B2O3) 0.41 1.7 0.14 2.25 Crystal glass (19 wt% PbO) 0.4 1.69 0.16 2.25 Cryst...