Answer:
2 NaOH(s) → Na2O(s) + H2O(g)
Explanation:
Step 1: Data given
Solid sodium hydroxide decomposes into solid sodium oxide and gaseous water
Step 2: The balanced equation
NaOH(s) → Na2O(s) + H2O(g)
On the right side we have 2 times Na, so on the left side we have to multiply NaOH by 2. Now we have 2x Na on both sides.
2 NaOH(s) → Na2O(s) + H2O(g)
Now on both sides we have 2x Na, 2x O and 2x H
The equation is balanced.
