A chemical equation is balanced if the number of each type of atom on the left side is equal to the number of each type on the right side. Is this reaction balanced?
Answers
Yes.
The statement is the definition of balanced equation.
Answer:
H2 + O2 → H2O A chemical equation is balanced if the number of each type of atom on the left side is equal to the number of each type on the right side. Is this reaction balanced? No, the given chemical equation is unbalanced.
Explanation:
H2 + O2 → H2O
A chemical equation is balanced if the number of each type of atom on the left side is equal to the number of each type on the right side. Is this reaction balanced
No, the given chemical equation is unbalanced.
The given equation for the formation of water (H₂O) from hydrogen (H₂) gas and oxygen (O₂) gas is shown below.
H₂ (g) + O₂ (g) → H₂O (l) …….(1)
The number of atoms of each type on LHS and RHS of equation (1) is represented in the table given below.
LHS RHS
H 2 2
O 2 1
The above table depicts that the number of H atoms is balanced on LHS and RHS of equation (1), but the number of O atoms on RHS is not the same as that on LHS. So, the given equation is unbalanced.
The O atoms are balanced by writing a coefficient, 2 in front of H₂O on RHS in equation (1), as shown below.
H₂ (g) + O₂ (g) → 2H₂O (l) …….(2)
The number of atoms of each type on LHS and RHS of equation (2) is shown below.
LHS RHS
H 2 4
O 2 2
The above table shows that the number of O atoms is balanced in equation (2). Contrarily, the number of H atoms has become unbalanced since it is 2 on LHS and 4 on RHS. Balance the H atoms by writing 2 in front of H₂ on LHS in equation (2), shown below.
2H₂ (g) + O₂ (g) → 2H₂O (l) …….(3)
Equation (3) is the balanced equation for the given reaction.
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