A. acid B. base C. salt D. water 相关知识点: 试题来源: 解析 B。原因:“For example, litmus paper can turn from red to blue in the presence of a base and from blue to red in the presence of an acid.”。 反馈 收藏
The substance that turns litmus paper red is ___. A. acid B. base C. neutral solution D. salt solution 相关知识点: 试题来源: 解析 A。能使石蕊试纸变红的物质是酸。选项 B 是碱;选项 C 是中性溶液;选项 D 是盐溶液。只有酸能使石蕊变红。反馈...
The substance that turns litmus paper red is___. A. an acid B. a base C. water D. salt 相关知识点: 试题来源: 解析 A。能使石蕊试纸变红的是酸。选项 B 碱使石蕊试纸变蓝;选项 C 水一般不会使石蕊试纸变色;选项 D 盐通常也不会使石蕊试纸变红。反馈...
Product name: red litmus/blue litmus paperProduct specification: 100 pieces/boxProduct use: rapid detection of solution pH Illustrate In case of alkaline solution (PH>8.0), red litmus paper turns blue; In case of acid solution (PH<4.5), blue litmus paper turns red; The pH value of the so...
It turns blue litmus red. It reacts with many metals (e.g., with zinc), releasing hydrogen gas, H2, and forming the sulfate of the metal. It reacts with most hydroxides and oxides, with some carbonates and sulfides, and with some salts. Since it is dibasic (i.e., it has two ...
网络释义 1. 石蕊试纸遇酸度会变红 odict.net|基于13个网页 2. 作家要接触真实的生活 www.haodic.com|基于 1 个网页 例句 释义: 全部,石蕊试纸遇酸度会变红,作家要接触真实的生活 更多例句筛选 1. Litmuspaperturnsredoncontactwithanacid. 石蕊试纸接触到酸性时会。
For example, litmus paper turns red in acidic solutions and blue in basic solutions. When an acid is neutralized by a base, the litmus paper will change from red to blue or vice versa, depending on the starting pH. 1. What is the general equation for acid-base neutralization reaction?
Explanation: Since Bases turn red litmus paper blue, acids turn blue litmus paper red and baking soda is basic in nature so it turns red litmus paper to blue. Ques: pH is a measure of which factor: Ion concentration Hydrogen-ion concentration Density Concentration of Solute Ans: b) Hydrogen...
acid, any substance that inwatersolutiontastes sour, changes the colour of certain indicators (e.g., reddens bluelitmuspaper), reacts with somemetals(e.g.,iron) to liberatehydrogen, reacts withbasesto formsalts, and promotes certainchemical reactions(acid catalysis). Examples of acids include ...
Bases turn red litmus paper blue, have a bitter taste, and have a pH of greater than 7. Compare acid. 2. Mathematics a. The side or face of a geometric figure to which an altitude is or is thought to be drawn. The base can be, but is not always, the bottom part of the ...