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
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...
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
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...
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nature of the acid: "sour", such as the citric acid in lemon juice; reacts with water, hydronium ion; release of hydrogen with metal reaction; carbonate compounds react with carbon dioxide gas released; with alkali salt formation; to change blue litmus red; the universal indicator turns ...
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 ...
how litmus paper is used to measure the acidity of a solution? answer: a paper that changes colour in response to the acidity of the solution in which it is dipped is litmus paper. hence can be used to measure acidity. when blue litmus paper is dipped in an acid solution, it turns ...
Step-by-Step Solution:1. Understanding Litmus Paper: Litmus paper is a natural indicator used to test the acidity or basicity of a solution. It comes in two colors: blue and red. Blue litmus paper is used to te
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. ...