Acids have pH below 7 and are sour in taste. We can taste mild acids but strong acids are tested by indicators .acids turns blue litmus to red. Base have pH above 7 and are bitter in taste these have soapy texture. And base turns red litmus to blue. ...
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...
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
Bases change the colors of indicators (litmus turns from red to blue) and they neutralize acids. Hence, bases are considered the chemical opposite of acids. Most common acid-base reactions take place in water solutions (commonly referred to as aqueous solutions ). One of the earliest ...
(a) Mary was given a bottle of hydrochloric acid and a bottle of unknown colourless solution, liquid Y. She used red and blue litmus papers to test fo liquid Y. The results are as follows:colour of red litmus colour of blue litmus liquid Y turns blue remains blue(i) What is liquid ...
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 ...
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...
In many ways, litmus paper is the perfect scientific sensor. It is cheap, requires no power or skill to use and yields instant results. Blue paper turns red in acids. Red paper turns blue in alkalis. And that is all you need to know. In the real world, though, things are a bit ...
Chemistry.a compound usually having a sour taste and capable of neutralizing alkalis and reddening blue litmus paper, containing hydrogen that can be replaced by a metal or an electropositive group to form a salt, or containing an atom that can accept a pair of electrons from a base. Acids ...
acid- any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc. ...