Question

How can I balance this equation? ____ H2 + ____ O2 ---> ____ H2O

Answer 1

2H2 +O2-------> 2H2O

Answer 2

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Here's your answer..

Answer :

H2 + O2 H2O

Balanced equation: 2H2 + O2 2H2O

Explanation:

⇒Step 1: Write the given unbalanced equation

H2 + O2 H2O

⇒Step 2: Compare the number of atoms of reactants with the number of atoms of products.

⇒Step 3: Now, first we consider the element having unequal no. of atoms on both sides. First, let us consider oxygen atom. If we multiply 2 in the product (in H2O), we will get the equal number of atoms as in reactant (O2)

⇒Step 4: Write the resulting equation:

H2 + O2 2H2O

⇒Step 5: Now check whether the equation is balanced or not by comparing the atoms

We find that the equation is not balanced yet. As the number of hydrogen atoms are unequal on the two sides.

⇒Step 6: Now, let us consider hydrogen atom. If we multiply 2 in the reactant (H2), we will get the equal number of atoms as in product (in 2H2O)

⇒Step 7: Write the resulting equation:

2H2 + O2 2H2O

⇒Step 8: Now check whether the equation is balanced or not by comparing the atoms.

We find that the equation is balanced now.

⇒Step 9: Write down the final balanced equation:

2H2 + O2 2H2O

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