The meaning of 2Na and Na2 is similar: two sodium atoms; in a chemical formula is used Na2.
Before a chemical formula is used 2 Na.
Na2S
2Na + 2H2O -------> 2NaOH + H2
The solution Na2 is soluble in water but not soluble in alcohol. Hope I was of help. Jlove
The balanced equation for the reaction between sodium (Na) and chlorine (Cl2) to form sodium chloride (NaCl) is 2Na + Cl2 -> 2NaCl. This equation is balanced because it has an equal number of each type of atom on both sides of the reaction arrow.
2NH3 + 2NA = 3H2 + NA3N2
Na2S+Hg2--- 2Na + HgS
The net ionic equation for Na2S + 2HC2H3O2 would be: 2Na+ + S2- + 2CH3COO- → 2CH3COONa + H2S.
Assuming you're reacting the two, it's 2Na + S --> Na2S.
That no matter is lost during the reaction. That is why the number of atoms of a specific element on one side of the reaction is equal to the number of atoms on the other side. Na2S + 2HBr -------> 2NaBr + H2S #of atoms................ #of atoms 2Na..............................2Na 1S................................1S 2H............................... 2H 2Br.............................. 2Br
The balanced molecular equation is CaCl2 + Na2S -> CaS + 2NaCl. To write the ionic equation, we need to break down the reactants and products into their respective ions. This results in the ionic equation: Ca2+ + 2Cl- + 2Na+ + S2- -> CaS + 2Na+ + 2Cl-. Cross out spectator ions that appear on both sides of the equation to obtain the net ionic equation: Ca2+ + S2- -> CaS.
The balanced chemical equation for the reaction between mercury(II) nitrate and sodium sulfide is: Hg(NO3)2 + Na2S -> HgS + 2NaNO3
Ionisation in solution is not a chemical reaction. It can be written as one but still it's NOT: only physical change of state ( subscripted between brackets (s) or (aq) ) Na2S(s) --> 2Na+(aq) + S2-(aq)
Na2S
Sodium and sulfur make sodium sulfide together. 2Na+ (2 cations) and S2- (anion) make Na2S (compound)
The balanced chemical equation for CdBr2 + Na2S is: CdBr2 + Na2S → CdS + 2NaBr
The oxidation number of Na in Na2S is +1. The oxidation number of S is -2. The sum of the oxidation numbers of all atoms in a compound must equal zero.
The simple reaction is: 2Na + S----------Na2S (in same conditions: ammonia solution or tetrahydrofuran)