Balance the equation- H2 - O2-H2O

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Standard XII

Chemistry

Oxidation Number Method

Balance the e...

Question

Balance the equation: $H_{2} + O_{2} \to H_{2} O$

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Solution

Balanced equation:
The unbalanced equation is: $H_{2} + O_{2} \to H_{2} O$
Reactant side Product side
Hydrogen 2 Hydrogen 2
Oxygen 2 Oxygen 1
Step 1: Balancing oxygen
2 moles $O_{2}$ on LHS are balanced by 2 moles $H_{2} O$ making a total of 2 moles $O_{2}$ on the sides.
$H_{2} + O_{2} \to 2 H_{2} O$
Step 2: Balancing Hydrogen
We add 2 moles $H_{2}$ to balance $H_{2} O$ , making a total of 4 $H$ on both sides.
LHS and RHS have 4 hydrogen atoms and 2 oxygen atoms.
The final balanced equation is given below
$2 H_{2} (g) + O_{2} (g) \to 2 H_{2} O (l)$

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Balance the equation: H2+O2→H2O

Balance the equation: $H_{2} + O_{2} \to H_{2} O$