Balance the following chemical equations including the physical states. (AS1)

Na+ H₂O NaOH + H₂

Na+ H₂O NaOH + H₂

Balanced equation: 2Na_(s) + 2H₂O_(aq)2NaOH_(aq) + H_2(g)↑

Explanation:

⇒Step 1: Write the given unbalanced equation.

Na+ H₂O NaOH + H₂

⇒Step 2: Compare the number of atoms of reactants with the number of atoms of products.

⇒Step 3: Now, first we consider the element having unequal no. of atoms on both sides. Thus, first let us consider hydrogen atom. If we multiply 2 in the reactant (in H₂O) and 2 in product (in NaOH), we will get the equal number of atoms as in both the sides.

⇒Step 4: Write the resulting equation:

Na+ 2H₂O 2NaOH + H₂

⇒Step 5: Now check whether the equation is balanced or not by comparing the atoms

We find that the equation is not balanced yet. As the number of sodium atoms are unequal on the two sides.

Balance the sodium atom.

⇒Step 6: If we multiply 2 in the reactant (in Na), we will get the equal number of atoms as in product (in 2NaOH).

⇒Step 7: Write the resulting equation:

2Na+ 2H₂O 2NaOH + H₂

_⇒Step 8: Now check whether the equation is balanced or not by comparing the atoms.

We find that the equation is balanced now.

⇒Step 9: Write down the final balanced equation:

2Na+ 2H₂O 2NaOH + H₂