In the experiment, if a substance turns blue litmus paper red, it means the substance is ___. A. acidic B. basic C. neutral D. unknown 相关知识点: 试题来源: 解析 A。解析:在实验中,如果一种物质使蓝色石蕊试纸变红,这意味着该物质是酸性的。B 选项碱性物质会使红色石蕊试纸变蓝;C 选项中性...
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
碱性溶液的意思
To solve the question step by step, we need to analyze the properties of the gas (X) based on the information provided:Step 1: Identify the properties of gas (X) - The gas (X) turns red litmus paper blue. This indicates that (X
A pH of 10 or more was lethal in all cases, this being just about the point where red litmus paper turns blue...doi:10.1016/S0035-9203(31)90254... LJ Davis - 《Transactions of the Royal Society of Tropical Medicine & Hygiene》 被引量: 2发表: 1931年 What's the Story With Blue ...
subacid solution, which then turns the blue litmus test paper into red, thereby making it possible to identify whether the food has been thawed or not... CW Hong,JH Choi,MK Jang,... 被引量: 0发表: 2019年 Redbay turns 40 NORTHERN IRELAND-BASED RIB builder Redbay Boats is celebrating ...