NaOH + HCl = NaCl + H2O why it is balanced equation give reason
The Correct Answer and Explanation is:
The equation NaOH + HCl = NaCl + H2O is a balanced equation because the number of atoms of each element is the same on both sides of the reaction. Let’s break it down:
- Reactants:
- NaOH consists of one sodium (Na) atom, one oxygen (O) atom, and one hydrogen (H) atom.
- HCl consists of one hydrogen (H) atom and one chlorine (Cl) atom.
- Products:
- NaCl consists of one sodium (Na) atom and one chlorine (Cl) atom.
- H2O consists of two hydrogen (H) atoms and one oxygen (O) atom.
If you look at the equation step by step:
- On the left side, you have:
- 1 Na from NaOH
- 1 O from NaOH
- 1 H from NaOH
- 1 H from HCl
- 1 Cl from HCl
- On the right side, you have:
- 1 Na from NaCl
- 1 Cl from NaCl
- 2 H from H2O (because H2O has two hydrogens)
- 1 O from H2O
Now, you can see that:
- The number of Na atoms is the same on both sides (1 on each side).
- The number of Cl atoms is the same on both sides (1 on each side).
- The number of H atoms is the same on both sides (2 on each side: 1 from NaOH + 1 from HCl = 2 on the right side in H2O).
- The number of O atoms is the same on both sides (1 on each side).
Since the same elements appear in equal quantities on both sides of the reaction, the equation is balanced. This conservation of mass is a fundamental principle of chemical reactions: matter is neither created nor destroyed during a reaction. Each atom that starts the reaction must end up as part of the products. This is why NaOH + HCl = NaCl + H2O is considered a balanced equation.
