When we do an experiment with lemon juice and litmus paper, what will happen to the litmus paper? A. It will turn blue B. It will turn red C. It will turn black D. It will not change color 相关知识点: 试题来源: 解析 B。解析:柠檬汁是酸性物质。石蕊试纸(litmus paper)遇酸性物质会...
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...
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. 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...
A. Turned red litmus paper blue. B. Turned blue litmus paper red. C. Did not change the color of either red or blue litmus paper. D. Made the litmus paper disappear. 相关知识点: 试题来源: 解析 C。解析:反应后,生成的溶液对红色或蓝色石蕊试纸都没有改变颜色。反馈...
Step by step video & image solution for What will be the action of litmus paper on the following substances ? (i) Lemon juice (ii) Vinegar (iii) Dry HCI gas (iv) Dry NH_(3) (v) Soap solution (vi) Milk by Chemistry experts to help you in doubts & scoring excellent marks in Clas...
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...
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 ...
Discuss the advantages and disadvantages of litmus paper and phenol red. Which indicator do you think is better? Why do you have to constantly swirl the Erlenmeyer flask while performing titrations? Why isn't hydrochloric acid used to both dissolve and precipitate silver?
I must help my child learn how to navigate it all. I can’t rescue him from the heartache, for it has become a lesson in life to learn well. To quote a great philosopher: “… I’m sorry to say so but, sadly, it’s true ...