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Question

Complete and balance the equation

NO2+H2O+O2


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Solution

Step 1: When Nitrogen dioxide (NO2) reacts with water (H2O), and Oxygen (O2) then it gives Nitric acid(HNO3).

NO2+H2O+O2HNO3

Step 2: Balancing the given chemical equation step by step as:

1. Count the number of atoms on both the sides

ReactantProduct
N - 1N - 1
O - 5O - 3
H - 2H - 1

Here, atoms of Nitrogen are balanced Hydrogen, and Oxygen atoms are not balanced on both sides.

2. Multiply (H2O) by 2 on the reactant side to balance atoms of Hydrogen and Oxygen on both sides.

NO2+2H2O+O2HNO3

3: Count the number of atoms on both the sides

ReactantProduct
N - 1N - 1
O - 6O - 3
H - 4H - 1

Here, an atom of Nitrogen is balanced but atoms of Hydrogen and Oxygen are not balanced on both sides.

4: Multiply (HNO3) by 4 on the product side to balance Hydrogen and Oxygen on both sides.

NO2+2H2O+O24HNO3

5: Count the number of atoms on both the sides

ReactantProduct
N - 1N - 4
O - 6O - 12
H - 4H - 4

Here, atoms of Hydrogen are balanced but atoms of Nitrogen and Oxygen are not balanced on both sides.

6: Multiply (NO2) by 4 on the reactant side to balance Nitrogen and Oxygen atoms on both sides.

4NO2+2H2O+O24HNO3

7: Count the number of atoms on both sides:

ReactantProduct
N - 4N - 4
O - 12O - 12
H - 4H - 4

Now the equation is balanced as all the atoms are equal on both sides.

Answer:

Step 3: 4NO2+2H2O+O24HNO3


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