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It belongs to the electrolyte, which is a type of salt. ki potassium iodide.
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It belongs to the electrolyte, which is salt.
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Yes, solutions can conduct electricity. It's salt.
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Potassium iodide is salt.
Salts in general are electrolytes.
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Salt. Salts refer to a class of compounds in which metal ions or ammonium ions (NH4+) are combined with acid ions or non-metal ions. Such as sodium chloride, calcium nitrate, ferrous sulfate and ammonium acetate, etc., such as calcium sulfate, copper chloride, sodium acetate, generally speaking, salt is the product of metathesis reaction, such as sulfuric acid and sodium hydroxide to produce sodium sulfate and water, there are also other reactions to form salt, such as displacement reaction.
The solution of soluble salts is conductive because there are ions that swim freely in the solution, so they can be used as electrolytes.
Potassium iodide. White cubic crystals or powders. It is slightly hygroscopic in humid air, and turns yellow after long-term precipitation of free iodine, and can form trace amounts of iodate.
Light and moisture can accelerate decomposition. 1g soluble in water, boiling water, 22ml ethanol, 8ml boiling ethanol, 51ml absolute ethanol, 8ml methanol, acetone, 2ml glycerol, about ethylene glycol. Its aqueous solution is neutral or slightly alkaline and can dissolve iodine.
Its aqueous solution will also oxidize and gradually turn yellow, which can be prevented by adding a small amount of alkali. Relative density. Melting point 680.
Boiling point 1420. Approximate lethal dose (rat, intravenous) 285 mg kg. It is widely used in the preparation of titration solutions in volumetric analysis iodometry.
Haplotypes were prepared with Brydes, Modified White, MS and RM media. Stool tests, etc. Photograph.
Pharmaceutical. Chinese name: potassium iodide.
Foreign name: Potassium iodide.
Chemical Formula: Ki
Relative molecular weight:
Chemical Category: Inorganic salts.
Type of regulation: Unregulated.
Storage: Keep tightly sealed, dry and protected from light.
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1. Strong acids: HCl, H2SO4, sulfuric acid, HNO3, nitric acid, HBR, hydrobromide, HI hydroiodic acid, HCO4, perchloric acid, spike.
2. Strong alkali: Naoh Koh Ba (OH) 2 barium hydroxide CA (OH) 2 calcium hydroxide.
3. Most salt: The salt you see in high school is all strong electrolytes.
4. Metal compounds: oxide: calcium oxide, cao sodium oxide, na2o, magnesium oxide, mgo, al2o3 oxide, zinc oxide, zno oxide, iron feo, iron oxide, fe2o3, copper oxide, cuo, mercury oxide, hgo silver oxide, ag2o
5. Weak acids: carbonate H2CO3, sulfurous acid H2SO3, acetic acid CH3COOH, hydrosulfuric acid H2S hydrofluoric acid, HF silicic acid H2SiO3, orthosilicic acid H3SiO4, all organic acids.
6. Weak alkali: ammonia monohydrate All hydroxide metal R (OH) except for strong Bi chain base
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Because potassium iodide is a acid anion, potassium ion is a metal cation, and the composition of potassium iodide meets the definition of salt, so it is salt.
A compound is defined as a pure substance consisting of two or more elements. Compounds can be classified as oxides, acids, bases, and salts according to their chemical properties.
Oxide refers to a binary compound composed of an oxygen element and another chemical element.
Acid refers to compounds in which the cations produced during ionization are all hydrogen ions.
Base refers to a compound in which all the anions produced during ionization are hydroxide ions.
Salts refer to compounds that are ionized to form volts and metal cations and acid ions.
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Because it's kio3 that you add!
At present, potassium iodate is mainly used for iodization of salt in China, while potassium iodide was used in the past. The advantage of potassium iodide is that it has a high iodine content (, the disadvantage is that it is easy to oxidize, the stability is poor, and the stabilizer needs to be added to the salt at the same time. Potassium iodate is highly stable and does not require a stabilizer, but the iodine content is low (.
In contrast, the advantages of using potassium iodate are still greater.
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Iodine elemental substance is easily sublimated when heated, while potassium iodate is different. And it is not easy to decompose.
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1. First see whether the total reaction needs the solute in the electrolyte solution to participate in the reaction, and if so, then the solution must contain the corresponding ions.
If the total reaction is: 2Fe3+ +Cu=2FeL2+ +Cu2+, soluble iron salts such as FeCl3, Fe(NO3)3, Fe2(SO4)3 can be used for the solution.
2. If the solute in the solution is not required to participate in the reaction, as long as the solute does not interfere with the main reaction, it can be selected.
For example, to design experiments to study the oxygen absorption corrosion of steel, NaCl, KNO3, NaOH and so on can be selected.
However, CuSO4 cannot be used, because if CUSO4 is used, the positive electrode will not be oxygen for electrons but copper ions.
H2SO4 cannot be used, because if H2SO4 is used, it is not oxygen absorption corrosion but hydrogen evolution corrosion. The positive electrode is not oxygen for electrons, but hydrogen ions for electrons.
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If the anode is an inert material, I2 and H2 are generated, and the KOH iodine ions are discharged at the anode to become elemental iodine, and the H ions are discharged at the cathode to become hydrogen.
Cell electrode discharge sequence.
Cathode laughing: cationic.
Discharge, the electronic ability is strong and the discharge is the first.
ag+>hg2+>fe3+>cu2+>h+>pb2+>sn2+>fe2+>zn2+> h+(h2o)>al3+>mg2+>na+>ca+>k+
Anode: Anion.
Discharge or electrode discharge, strong electron loss ability first touch the accompanying discharge.
If the anode is an active metal (Metal Activity Sequence Table.
ag), the anions in the solution are not discharged, but the electrode material loses electrons. If the anode is inert (PT, Au, graphite), the discharge sequence is as follows:
S2 i br cl oh oxyate ions.
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Iodine and potassium hydroxide.
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Potassium iodate is added to the edible salt, because it is a mixture and not an electrolyte, and it can conduct electricity when dissolved in water or in a molten state.
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