百度试题 结果1 题目Before the reaction, what color did the acid solution turn blue litmus paper? A. Blue. B. Red. C. Green. D. Yellow. 相关知识点: 试题来源: 解析 B。解析:实验前,酸性溶液使蓝色石蕊试纸变红。反馈 收藏
What color does acid turn litmus paper? What is glacial acetic acid? Knowing that analine has a non-ionizable side chain, what would be its net charge at its psychological pH? How does litmus paper identify a base? What is the number of protons in hydrogen?
Acids and Bases Acids Bases and Salts Acids | Learn Important Terms and Concepts Acrolein Acrylic Actin - Structure, Types, Function and FAQs Actinides Actinium Activity and Selectivity of a Catalyst - Turnover Number, Turnover Frequency and FAQ Activity Coefficient Addition Reaction Addition Reaction...
red litmus paper remains red. In an alkaline solution, red litmus paper turns blue. When an alkaline compound dissolves in water, it produces hydroxide ions, which cause the solution to become alkaline. Red litmus paper can also be used to test...
Why did the solution turn to pink at the end of the titration ? In a series of titration experiments, why is it that you always work with the smallest sample first? Explain. Why does the titration endpoint color fade after 30-60 seconds?
A. Tastes sweet B. Turns litmus paper blue C. Reacts with metals to produce hydrogen gas D. Has no E. ffect on indicators 相关知识点: 试题来源: 解析 C。本题考查酸的性质。酸尝起来是酸的,不是甜的,A 错误;酸能使石蕊试纸变红,不是变蓝,B 错误;酸能和金属反应产生氢气,C 正确;酸对指...
When red litmus paper is placed into a basic substance, it will turn blue. If it comes in contact with an acidic or neutral substance, it will remain red. Red litmus paper is meant to test only for an alkaline pH level. Common acids include include tartar sauce, corn, bacon and beer....
A. To make the solutions colorful. B. To test the acidity or basicity of the solutions. C. To add more substances to the reaction. D. To make the E. xperiment more F. un. 相关知识点: 试题来源: 解析 B。解析:在实验中,用石蕊试纸是为了测试溶液的酸性或碱性。反馈...
4. If you own a handset with a nonreplaceable battery, like an iPhone or Nokia Lumia, then pulling the battery isn't an option. You'll have to risk pressing a few buttons to check if it's still on and to swiftly turn it off if it is. Take care when handling the phone in this...
What color do you predict phenolphthalein turn when added to 10 ml of 2 M HCl? If a solution turns blue litmus paper red, what type of solution is it? Acids and bases: a. can change the color of plant-based dyes b. ionize in water c. have neutral pHs d. both a a...