Potassium Manganate (VII) also called potassium permanganate, dissolves very quickly in hot water and much slower in cold water.
When potassium permanganate solution is dropped into water, it dissolves and forms a purple solution. If concentrated sulfuric acid is then added, the manganese in potassium permanganate can be reduced to form a colorless compound. This reaction generates heat and can be exothermic. The resulting solution will likely be colorless or have a faint pink hue instead of the original purple color.
If a student accidentally put potassium chloride instead of potassium chlorate in the crucible during a lab experiment, the results would likely not match the expected outcome. Potassium chloride does not release oxygen when heated like potassium chlorate does, so there would be no oxygen to react with the magnesium present in the crucible. This would impact the ability to achieve the desired chemical reaction and may lead to incorrect data or observations.
The reaction between potassium and hydrochloric acid is very violent, even explosive. On contact with the acid the reaction rapidly releases heat and hydrogen gas, which ignites. This in turn sets the potassium on fire. When this happens the potassium may explode, scattering flaming molten globules of metal.
because the boiling and freezing points can be from two different substances so one could be frozen at 0 degrees and the other boiling
The atomic mass of Potassium is 39 and that of Sulfur 32. The formula for Potassium Sulfide is K2S therefore the molecular weight of Potassium Sulfide is (39 * 2) + 32 = 110. Therefore one mole of Potassium Sulfide weighs 110 grams. Therefore 3.3 moles of Potassium Sulfide weigh 110 * 3.3 = 363 grams.
Potassium Dichromate (VI) can be acidified with sulphuric acid AND hydrochloric acid! Note that another common oxidising agent ' Acidified Potassium Manganate (VII)' is sometimes used although this one can only be acidified with sulphuric acid not hydrochloric as the Manganate (VII) oxodises the Cl- ion instead!
If you use potassium hydroxide instead of sodium hydroxide, you would make potassium salts instead of sodium salts. For example, if you reacted potassium hydroxide with hydrochloric acid, you would produce potassium chloride.
yes probs as bananas do have potassium in
Potassium chloride is melted at 770 oC.
What?!
When potassium permanganate solution is dropped into water, it dissolves and forms a purple solution. If concentrated sulfuric acid is then added, the manganese in potassium permanganate can be reduced to form a colorless compound. This reaction generates heat and can be exothermic. The resulting solution will likely be colorless or have a faint pink hue instead of the original purple color.
That's like boiling but in oil instead of water.
You can make hot cinnamon toothpicks using boiling water instead of soaking in a jar by using regulated heat.
No, potassium does not have a noble gas electron configuration. The noble gas configuration for potassium would be [Ar] 4s¹, but instead, potassium has the electron configuration 1s² 2s² 2p^6 3s² 3p^6 4s¹.
No it can't be dropped so stop trying
Potassium hydroxide is the compound potassium hydroxide but as it is quite hygroscopic the "dry form" also contains a significant amount of the compound water that it extracted from the surrounding air. If instead you were asking about its elements, they are: potassium, oxygen, and hydrogen.
They might be used to reduce hypertension, for oedema, for heart failure, or when potassium loss is a concern (instead of other diuretics)