what is the chemical reaction between Lithium metal and water?
461008
Li + H2O = LiOH + H2 + Heat\n\nThis is an exothermic reaction to raise the temperature of system so high that H2 reacts with atmospheric oxygen to give water with the reaction\n\n2H2 + O2 = 2H2O\nThe formation of water vapors is a side reaction of the above reaction.\n\nLi is alkali metal and all alkali metals react in the same pattern.
760538
Na will react more vigorously with water. Because Na is a bigger atom than Li, it's valence electron is farther away from the nucleus than Li's  valence electron is far away from it's nucleus. As a result, Na's valence electron is more loosely held in it's orbit, and so can escape more easily than Li's valence electron can escape.
286410
yes, it will explode.  the reaction\n\n2K + 2H2O -> 2KOH + H2\n\nis extremely exothermic and can get very hot.  hot enough, in fact, to ignite the hydrogen, which in an oxygen atmosphere (like air) will explode.  for this reason potassium metal is always stored under oil or kerosene that will not mix with water.\n\nit is essentially the same reaction as the well-known sodium metal in water; lithium, sodium and potassium are in the same group of the periodic table and therefore have similar chemistry.\n\nhere are some pictures of potassium and water reacting, about halfway down the page:\nhttp://www-chem.ucdavis.edu/chemclub/Photos/pday.htm\n\nnote that was probably a small amount of potassium; a larger amount would probably cause a pretty spectacular kaboom.
432258
Since it is at thermal equilibrium, the energy (q) of the water must equal the energy (q) of the metal.\n\nTherefore: mcAT = mcAT\n\n(90)(4.18)(0.9) = (11)(87.2)(c)\n\nSolving for c, the specific heat of the metal would be 0.353 J/g*oC
813459
Alkaline metals like lithium, sodium and potassium etc in  pure form would float in water is added to them. But that would be only part of the reaction because simultaneously  they are reacting with the water, producing hydrogen bubbles which buoy them up. Potassium producing enough that it bursts into flame normally and sodium sometimes depending on the size of chunk. The remaining alkali metals all have explosive reactions with water.
68791
Reactivity in goup 1 increses down the group from Lithium to Sodium to Potassium. Therefore, Sodium would the closest. They are all group 1 metals, just in different periods. All have one vacant electron which makes them very reactive.
806488
NaOH + H2O---> Na+   +   OH-   +H20\n\nThere is no reaction, but sodium hydroxide will ionize in the water. Actually the water will ionize also.
2629
The overall reaction that takes place during  anodization is:\n\n2Al + 3H2O ==> Al2O3 + 3H2\n\nThis is the sum of the separate reactions at each electrode. The reactions at the anode occur at the metal/oxide and oxide/ electrolyte interfaces. The ions that make up the oxide are mobile under the high field conditions. At the metal/oxide interface the inward moving oxygen anions react with the metal:\n\n2Al + 3O2- ==> Al2O3 + 6e-\n\nAt the oxide/electrolyte interface outward moving aluminum cations react with water:\n\n2Al3+ + 3H2O ==> Al2O3 + 6H+\n\n(In case of aluminum dissolution into the electrolyte during porous film formation, the anodic reaction is:\n\n2Al ==> 2Al3+ + 6e-)\n\nThe reaction at the cathode is hydrogen gas evolution:\n\n6H+ + 6e- ==> 3H2\n\nThe sealing reaction can be written as:\n\nAl2O3 + 3H2O ==> 2AlOOH*H2O \n\nchk the link.it is very informative.
822780
ok, so lithium hydroxide is a base; nitric acid is an...acid; and \n\nacid + base -> salt + water\n\nin this case, it's\n\nLithium hydroxide + Nitric acid -> lithium nitrate + water\n\nLiOH + HNO3 -> LiNO3 + H2O\n\nBest wishes!
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
346788
Mg(s) + H20(l) -----> MgOH2 + 1/2 H2\n\nThe magnesium reacts with water in a violently exothermic reaction.  It forms a compound of magnesium hydroxide consisting of one Mg(2+) ion and two hydroxyl ions OH(-) and one half mole of H2 gas is evolved, which is where the sparks and flames come from.
935290
Certin metals which are much more electropositive than hydrogen(viz. metal which are placed above hydrogen in the electro-chemical series) react with many acids and liberate hydrogen gas.in those cases ,the displcement of hydrogen of the acids takes plce diretly.but in majority of cases,this displacement process offurs through reaction between the acids and the oxides or hydroxides of metals.\nAcids also charatrised by their tendency to react with metal carbonates and bicarbonates evolving carbon dioxide.
67959
Oxygen in the atmosphere reacts with iron to oxidize it in what is called a redox reaction (oxidation/reduction).  The redox reaction is defined by the exchange of electrons--uncharged iron will lose two electrons to an oxygen molecule, creating iron oxide.  Water quicken rusting by serving as a catalyst.  Dissolved oxygen in the water reacts, and as the water dries, the oxygen becomes increasingly concentrated.\n\nShips will prevent wide-spread rusting by creating what is called a "sacrificial anode."  You might know the names anode and cathode from the ends of a battery.  Batteries function by employing two seperate redox reactions, where one end corrodes to release electrons, which travel to the other end and react with metal cations in solution, turning them to a solid metal.  In the case of ships, the corrosion of iron is prevented by creating a sacrificial anode out of something even more reactive than the iron (usually magnesium, if memory serves).  The corrosion of the magnesium releases excess electrons in the iron, which delays corrosion of the iron--oxyegn can grab the free electrons created by the corrosion of magnesium without needing to corrode the iron.\n\nI would imagine that the quickening of the rusting process cause by a scratch in the tin is due to the fact that the corrosion becomes concentrated in a single place.  The scratch likely serves as the "sacrificial anode" for the rest of the can.
1037023
Water, when heated from a solid to liquid state, but ultimately in a gaseous state it again expands.  It still obeys all the laws of chemistry, but the bonds just arrange themselves in a more space efficient manner in liquid than in solid form.\n\nAnd moses with a P, no metals exist with the properties you say.  It is physically impossible, sorry man, but I'm a biochem major and it's my job to know what stuff does under different stresses, and nothing does what you claim.  However, if you do have a material that does this, get in touch with me, we'll talk to the patent office, and we'll license it out to companies for billions of dollars.
748872
Cu2+ (aq)  +  Zn (s) -->  Cu (s) + Zn2+ (aq)
625286
Cu is more active than Silver or to put it in more technical terms, its reduction potential is higher. Thus this particular reaction is spontaneous i.e. happens on its own. \n\nThe reverse is also possible but only if you supply the energy required which is usually in the form of electricity.
1116694
the reaction leads to production of hydrogen gas ...\n\n\n2Al(s) + 6HCl(aq) → 2Al3+(aq) + 6Cl-(aq) + 3H2(g)