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?
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...
Litmus paper is made from wood cellulose that is infused with an aqueous solution consisting primarily of lichens. During the production of red litmus paper, the lichens are left to ferment in potassium carbonate, ammonia, and a small amount of sulfuric or hydrochloric acid. The mass is then m...
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...
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....
\\ 2. If red litmus paper is used to test the substance it would turn what color? \\ a. basic; red b. acidic; red c. acidic; blue d. basic; blue An acid turns the indicator litmus to what color? What is the color of phenolphthalein in an acidic solution? Do acids or ...
To examine or try, as by the use of some reagent; as, to test a solution by litmus paper. Taste A particular sensation excited by the application of a substance to the tongue; the quality or savor of any substance as perceived by means of the tongue; flavor; as, the taste of an or...
To determine the change observed when testing soap with litmus paper, follow these steps:1. Understand the Nature of Soap: - Soap is a basic compound. It is formed through the saponification process, which involves the reac
(a) The four properties of acids are: Acids are compounds that are having a sour taste. Acids have the ability to show a change in color as soon as...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question ...