What happens when hydrogen peroxide and potassium iodide are mixed together?
613729
This experiment is often used as a fun science demo for kids...It is called "Elephant's Toothpaste." Hydrogen peroxide is catalytically decomposed by the potasium iodide. By the idodide ion, actually. Oxygen gas is rapidly formed. You put a squirt of dish soap and a drop of food coloring into 50 mL of 30% hydrogen peroxide... Then when you add 1 or 2 grams of potassium iodide... the released oxygen gas is trapped in soap bubbles... you get a huge amount of foamy suds!!!\n\nThe reaction sequence is as follows:\n\nH202 (aq) + I- (aq) --> H20 (l) + OI- (aq)\n\nH202 (aq) + OI- (aq) --> H20 (l) + O2 (g) + I- (aq) \n\nThe iodide ion is not consumed by the reaction, therefore it is a CATALYST.
504495
Hydrogen peroxide give hydrolysis of complexes, since the hydrogens on water ligands are VERY acidic the ligands become hydroxides and the complex usually ends as a metal oxide. Ammonia acts as a lewis base with the complex accepting the electron density and most likely kicking off some chlorides. HCl just storms the complex with chloride ions. And The metal oxygen bonding is much stronger than the metal chloride bond (mainly due to differences in pi backbonding) so the chlorides shouldnt do much to the original complex. \n\n\nAs for the exact molecular formula of what should happen, try asking god. For the answer that your teacher wants try reading a book.
643847
1. Sodium will combine with Iodine, but Iodine never has a -3 charge. That would involving adding electrons to the 6st orbital, which would be considerably less stable than adding 1 electron to fill the 5p orbitals.\n\nSodium also doesn't form a +2 charge.\n\nBased on your data, it would be:\n\n3Na^+2 + 2I^-3 = Na3I2 \n\nI think it's:\n\nNa+ + I- ---> NaI or 2Na + I2 (solid) ---> 2NaI \n\nionic\n\n\n2. Protons will activately react with hydride donors to give hydrogen gas. That's why Lithium aluminium hydride is so reactive to water ... it considers the water's hydrogen atoms as a source for protons.\n\nH+ + H-1 ---> H2   covalent and non-polar.\n\n3.\nC^+4 + 20^-2 ---> CO2\n\nCovalent and non-polar
978914
Chemically combined means that the two substances have reacted together to give a new substance, as opposed to just mixing.  Like, if you mixed hydrogen and oxygen together without a reaction, you'd still have hydrogen gas and oxygen gas.  But if they react together, they're chemically combined to give water.\n\nThis really should have been in chemistry rather than mathematics.
507416
I2 + H2O = IO3(-) + H+\n\nI2 = I-
975374
Acids and Bases will cancel each other out when mixed in equal proportions and you will end up with Water and a Salt.  The salt will depend on what to substances you are mixing. \n\nFor example, if you mix Hydrochloric Acid (HCL) with Sodium Hydroxide (NAOH) in the proper MOL to MOL ratios you will end up with Water (H2O) and Sodium Chloride (NACL)
828284
The first thing that happens is that it melts.  If you continue heating the molten salt, you will see bubbles appearing.  These are bubbles of oxygen:\n2 KClO3(l)   --->   3 O2(g)   +   2 KCl(l)\nThe main product left behind is potassium chloride, but I believe that you also get some potassium perchlorate (tetraoxochlorate(VII)), produced by disproportionation:\n4 KClO3(l)   --->   3 KClO4(l)   +   KCl(l)\n\nIt wouldn't surprise me if the reaction also produced very small amounts of oxides of chlorine, such as chlorine dioxide, ClO2.\n\nAllan Deeds.
591203
...It dissolves into ions, K+ and I-...
919591
You need to know a lot more about it before you can answer the question.  Potassium chloride, KCl, is a salt.  It is very similar to table salt, NaCl, in behavior and properties.  If you dissolved a little bit of it in water, you'd have an unsaturated solution.  If you dissolved so much of it in water that any more KCl you added would fall to the bottom without dissolving, you'd have a saturated solution.  If you then heated it up and dissolved the remaining KCl (because the solubility of KCl in water increases with temperature), and then cooled it back to room temperature, you'd have a supersaturated solution.  But without knowing the concentration of the solution, as well as the solubility of KCl in water, you can't answer this question.
947778
You need to make sure that there is the same number and kind of atoms on each side of the arrow.\n\nCa(OH)2 + MgCl2 ---> Mg(OH)2 + CaCl2, both Mg and Ca stay+2\n\nBaO2(s) + H2SO4 ---> BaSO4(s) +H2O2 \n\nAg2S --->2 Ag+  +  S-2\n\nHC2H3O2 + MgCO3 (s) ---> H2O + CO2 + Mg+C2H302-\n\nI may not have written net ionic form, but I did get all the atoms on each side I am unsure of the reaction producing hydrogen peroxide, but you do have to account for all atoms.
957626
It is because you have the wrong compound (HSO3)!\n\n2 HI + K2SO3 ---> 2KI + H2SO3
167726
potassium can form many compounds. such as KCN KCl KOH et cetera.
1184525
Depends on what is being split and where the combustion takes place.  The combustion alone will produce changes of oxygen, hydrogen and any other chemical in the air or around the combustion.  The remaining products will more than like be water, carbon min-oxide, etc.
4396
There is a 1:1 ration of potassium cations to iodide anions.
919726
Sodium and Potassium are correct.  They are extremely reactive with water, forming Hydroxides and releasing Hydrogen gas, which is usually ignited from the exothermic heat of the reaction.\n\n2 Na + 2 H2O -> 2 NaOH + H2\n\n2 K + 2H2O -> 2 KOH + H2
886721
Potassium is so reactive that it will combine with other elements. It is never found free in nature.  It is extracted from minerals like carnallite, langbeinite, polyhalite and sylvite
890977
I'll try to explain this without going too much into chemistry.\n\nBefore adding peroxide, your mixture is fairly basic with baking soda;\n\nhydrogen peroxide is an acidic compound [though it's fairly weak], as we know, acids react with bases; it will react with the base in the mixture, in our case, baking soda. This reaction will give out gases and heat, with dish soap, you will have lots of air bubbles. Another reason why you're using H2O2 is because H2O2 decomposes on its own to give out gas, so you will have a better effect than just adding acids; this decomposition is catalysed by trace amount of metal ions [transition metals], so if you could find some copper salt [for example, CuSO4] and add them in the mixture, the reaction will be even more violent.\n\n*******\nNot all ingradients have significant purpose in your case; for example, you can remove the yeast while still having the same effects [hydrogen peroxide will kill them anyways].