What is the molecule formula that the compound created when lithium reacts with oxygen gas?
This concern is asking united state for the molecule formula because that the product of the reaction in between lithium and oxygen. As you may currently know, this reaction the lithium, an alkali metal, with oxygen in the wait occurs very quickly. Because that example, a item of lithium metal, as soon as cut, will tarnish really quickly, when in contact with air. This is together a an outcome of the reaction v the oxygen in the air. You will find alkali metals, choose lithium, gift stored under oil. This is in order to protect against its reaction with both the oxygen in the air and also any water, due to the fact that the reaction between lithium and water is really violent.
We’re provided the two reactants in this case, lithium and oxygen. For this reason the product have to be a result of combine lithium and also oxygen atom in part way. Now we just need to occupational out how plenty of lithium atoms and also how many oxygen atom in each molecule. Let’s begin by looking at the oxidation states of both lithium and oxygen. Lithium is one alkali metal in group one the the regular table. It forms a add to one oxidation state.
Oxygen is in group 16 on the right-hand side of the periodic table and most commonly forms a minus two oxidation state. We desire our resulting compound to it is in neutral overall. So all of the fees on both the lithium and also the oxygen must add up together to offer us zero. If our molecule formula was one lithium and one oxygen atom, we would not have actually a neutral compound. As we can see, we need two lithium atoms to counter the 2 minus fee on the one oxygen atom. So the molecule formula because that our last compound is Li₂O, two lithium atoms to one oxygen atom.
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And this is the formula because that lithium oxide.