Only one drop of the pottasium iodide reagent 100 for total-residual-chlorine measurement is dropped into the cell (f) from a reagent bottle G1. In two minutes after the finish of this operation, the measuring switch (e) in the total residual chlorine measuring apparatus 500 is pressed, ...
Potassium chloride (KCl), ionic compound whose molecules consist of one potassium atom and one chlorine atom. It is a white-to-colourless face-centred cubic crystal. Potassium chloride can be extracted from sylvinite, a mineral mixture of sodium chloride
As we know, when potassium iodide is titrated with chlorine water in a neutral solution, the reaction which takes place is expressed by the equation: Kl + 3Cl2+ 3H2O → KCl + HIO2+ 5HCl While on the other hand, it may not be so well known that if a large excess of free hydrochlo...
题目 16 What happens when chlorine is bubbled through aqueous potassium iodide?C A Chlorine is oxidised to chlorate(V) ions. B Chlorine is oxidised to chloride ions. C lodide ions are oxidised to iodine. D There is no observable reaction. 相关知识点: 试题来源: 解析 C 反馈 收藏 ...
Excess chlorine is boiled off, and the KCl is precipitated by HCl (generated by dropping conc HCl into conc H2SO4). The precipitate is washed with water, dissolved in conductivity water at 90-95o, and crystallised by cooling to about -5o. The crystals are drained at the centrifuge, ...
Reactions with halogens, fluorine, chlorine and bromine occur with explosive violence. Thus, in contact with liquid bromine it explodes forming potassium bromide: 2K + Br2 → 2KBr Potassium ignites in iodine vapor forming potassium iodide.
Chlorine liberated at the central graphite anode is collected in a nickel dome and subsequently purified. Potassium cannot be produced in this way because it is too soluble in the molten chloride to float on top of the cell for collection and because it vaporizes readily at the operating ...
If the reaction occurs, write the complete, balanced equation. If the reaction does not occur, explain why. Reaction: Iron (II) plus potassium i Bromine liquid reacts with aqueous potassium iodide to form solid iodine and aqueous potassiu...
Why? Calcium brings in a +2 charge, while chlorine brings in a -1. In order for the overall charge to be 0, we need 2 chlorine atoms. +2 -(1*2) = 0 Why does calcium sulfide have a higher melting point that potassium fluoride?
The direct determination of salinity is awkward. It is defined as the weight of solids in grams in 1kg of seawater when the water has been evaporated and all the carbonates have been converted to oxides, bromine and iodine converted to chlorine, and all organic matter completely oxidized. Direc...