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...
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
36、What color does litmus paper turn when dipped into acid? A、Blue B、Yellow C、Brown D、Red Answer:D 37、Who lived at 1313 Mockingbird Lane? A、The Addams Family B、The Partridge Family C、The Munsters D、Elmo Answer:C 38、Who is considered to be the Father of History? A、Herodotu...
What color does acid turn litmus paper? What is titanium dioxide feedstock? What is the empirical formula of titanium oxide? What is the element titanium used for? What is the atomic number for cobalt? What does a color change indicate the formation of in chemistry? What minerals are mined...
Best suited for;fish in outdoor ponds. 2. pH Test Paper – Broad Range But Less Accurate Commonly known as test strips or litmus paper, this paper changes color according to how acid or alkaline a substance is. Simply tear off a strip of paper, dip it into your aquarium water and wait...
Litmus paper is used to test the pH balance of a liquid or substance. Most substances are either alkali or acid. Alkaline, or basic, chemicals include baking soda, ammonia and lye. Acidic substances include vinegar, lemon juice and battery acid. Alkalies and acids are at opposite extremes ch...
What happens when a piece of wet red litmus paper is passed through a hydrogen gas? What happens immediately after the addition of copper to lead(II)nitrate? Describe how to prepare a solution of sulphuric acid in the laboratory. Explain what would happen to the color of a dilute solution ...
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...
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What is an arrhenius base? What is the charge of a neutral object? What is a hydroxide ion? Which hydrogen in each molecule is most acidic? What is a normal ammonia level? What color does acid turn litmus paper? What is the overall charge of a nonpolar amino acid at a PH below its...