百度试题 结果1 题目Water is added to a test-tube containing dilute sulphuric acid of pH 4.What could be the pH of the resulting solution?A 8 B 6 C 4 D 2 相关知识点: 试题来源: 解析 B 加水可以使硫酸的ph值升高,但不会超过7 反馈 收藏 ...
being treated water as supply water without performing pH adjustment with an alkali agent in a method for treating a circulating cooling water in which acid is added to a cooling circulating water and the cooling circulating water is subjected to RO membrane treatment under the condition of pH 3...
24 The oxide of element X was added to an acid. It reacted to form a salt and water.oxide of element X acid What is the pH of the acid before the reaction and what type of element is X? C pH type of element X Agreater than 7metal Bgreater than 7non-metal Cless than 7metal...
Concentrated sulphuric acid (95-98%) becomes corrosive to stainless steel when diluted between 20-80%. Corrosiveness is further enhanced when acid is diluted with sea water because of the high chloride content. When tank cleaning after discharge of a cargo of sulphuric acid, a large amount of ...
asifflng around too long.[translate] ahydrochloric acid, mixed with 10 ml of water, is added to the sep funnel[translate] aacid-water mix is added and shaken. The odor should now be gone, but if it[translate]
awhen chlorine is added to water, part of it evaporates into the air, causing the familiar odor, and the rest is present in water in the following forms:chlorine, hypochlorous acid, hydrochloric acid, hypochlorous anion, and chloride. 当氯增加到水时,一部分的它蒸发入空气,导致熟悉的气味,并且...
To 106 g of 84 % sulfuric acid, was added 50 g of acrylonitrile. After stirring for 30 min atr.t., the resulting mixture was heated to 95 ℃, and stirred for 2 h. After cooling, the solidwas collected by suction, and the filter cake was transferred into a beaker. To the ice-cool...
The experimental procedure is as follows. A fresh crude O/W nanoemulsion was prepared as described above. Then, 1.2 mL of 5 M sulfuric acid was added to 118.8 mL of the nanoemulsion (final acid concentration in the nanoemulsion = 50 mM). The demulsification was complete in less than 1 h...
awhen chlorine is added to water, part of it evaprates into the air, causing the familiar odor, and the rest is present in water in the following forms:chlorine, hypochlorous acid, hydrochloric acid, hypochlorous anion, and chlride. 当氯增加到水时,一部分的它evaprates到空气里,导致熟悉的...
aadded during 20 minutes to concentrated hydrochloric acid (80 ml.) and water (20 ml.) containingamalgamated zinc (80 g.), and the reaction completed by heating the mixture under reflux for 10 minutes.The hot liquid was then decanted, the residual amalgam was washed with hot methanol (100...