Chemistry
Grade-10
Easy
Question
Which is a balanced equation?
- PbO2 + 2H2 → PbO + 2H2O
- 2SO2 + H2O --> H2SO4
- 2Na + 2H2O --> 2NaOH + H2
- 2Na + 2H2O --> 2NaOH + H
Hint:
A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge are the same for both the reactants and the products.
The correct answer is: 2Na + 2H2O --> 2NaOH + H2
2Na + 2H2O --> 2NaOH + H is a balanced equation as the no. of atoms on the reactant side is equal to the no. of atoms on the products side.
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