It has been a long time, but I think it has to read:
2Na + 2H2O --> 2NaOH + H2
to be balanced.
The net ionic equation for the given reaction is H+ (aq) + OH- (aq) → H2O (l)
The balanced equation is 2HCl + Na2S → H2S + 2NaCl. This is balanced as the number of atoms of each element is the same on both sides of the equation.
The chemical equation is:Na + OH- + H+ + Cl- = Na+ + Cl- + H2O(l)
The chemical formula of nitric acid is HNO3.
The balanced equation for the reaction between calcium hydroxide (Ca(OH)₂) and sulfuric acid (H₂SO₄) is: Ca(OH)₂ + H₂SO₄ → CaSO₄ + 2H₂O.
Hydrochloric acid and sodium hydroxide yield salt and water H+ + Cl- + Na+ + OH- --> Na+ + Cl- + H2OComment:In solutions you better leave unchanged ions ( Cl- and Na+) out of the balanced equation: called to be 'tribune ions' (people on the tribune don't take part in the 'match'):H+ + OH- --> H2O This looks simpler than: H+ + Cl - + Na + + OH- --> Na + + Cl - + H2O
Sodium (Na+) and Hydrogen (H+) do not mix because they are both positively charged.
The net ionic equation for the given reaction is H+ (aq) + OH- (aq) → H2O (l)
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The balanced equation is 2HCl + Na2S → H2S + 2NaCl. This is balanced as the number of atoms of each element is the same on both sides of the equation.
Na+ plus OH- plus H+ equals H2O plus Na+ plus Cl-
H2 + Cl2 --> 2HCl
2H2 + O2 --> 2H2O
It is already balanced, you have the same number of H's and the same number of Cl's in each side of the equation.
That is a list of the valences of several elements.Hydrogen is +1 (and also -1, incidentally)Sodium is +1Potassium is +1Calcium is +2
The chemical equation is:Na + OH- + H+ + Cl- = Na+ + Cl- + H2O(l)
The chemical formula of nitric acid is HNO3.