Q. 6 A4.4( 11 Votes )

# Write a balanced chemical equation for process of photosynthesis.

Answer :

__Photosynthesis reaction:__ CO_{2} + H_{2}O C_{6}H_{12}O_{6} + O_{2} + H_{2}O

__Balanced equation:__ 6CO_{2} + 12H_{2}O C_{6}H_{12}O_{6} + 6O_{2} + 6H_{2}O

Step 1: Write the unbalanced equation

CO_{2} + H_{2}O C_{6}H_{12}O_{6} + O_{2} + H_{2}O

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. Thus, first let us consider carbon atom. If we multiply 6 in the reactant (in CO_{2}), we will get the equal number of atoms as in product (in C_{6}H_{12}O_{6})

Step 4: Write the resulting equation:

6CO_{2} + H_{2}O C_{6}H_{12}O_{6} + O_{2} + H_{2}O

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 and oxygen atoms are unequal on the two sides.

first balance the hydrogen atom.

Step 6: If we multiply 12 in the reactant (in H_{2}O) and 6 in the product (in H_{2}O), we will get the equal number of hydrogen atoms both sides.

Step 7: Write the resulting equation:

6CO_{2} + 12H_{2}O C_{6}H_{12}O_{6} + O_{2} + 6H_{2}O

Step 8: 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 oxygen atoms are unequal on the two sides.

Step 9: Now, we consider oxygen atoms. If we multiply 6 in the product (in O_{2}), we will get the equal number of atoms as in reactants (in 6CO_{2} and 12H_{2}O)

Step 10: Write the resulting equation:

6CO_{2} + 12H_{2}O C_{6}H_{12}O_{6} + 6O_{2} + 6H_{2}O

We find that the equation is balanced now.

Step 11: Write down the final balanced equation:

6CO_{2} + 12H_{2}O C_{6}H_{12}O_{6} + 6O_{2} + 6H_{2}O

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