Which chemical equation is balanced?Group of answer choicesLiOH + CO2 → Li2CO3 + H2OLiOH + 3CO2 → 2Li2CO3+ H2O2LiOH + CO2 → Li2CO3 + H2O4LiOH + CO2 → Li2CO3+2H2O
Question
Which chemical equation is balanced?Group of answer choicesLiOH + CO2 → Li2CO3 + H2OLiOH + 3CO2 → 2Li2CO3+ H2O2LiOH + CO2 → Li2CO3 + H2O4LiOH + CO2 → Li2CO3+2H2O
Solution
The balanced chemical equation from the given choices is:
LiOH + CO2 → Li2CO3 + H2O
Here's the step-by-step process to confirm this:
- Count the number of atoms for each element on both sides of the equation.
On the left side (Reactants):
- Li: 1
- O: 2 (1 from LiOH and 1 from CO2)
- H: 1
- C: 1
On the right side (Products):
- Li: 2
- O: 3 (3 from Li2CO3 and 1 from H2O)
- H: 2
- C: 1
- As you can see, the number of Li and O atoms are not balanced. To balance the Li atoms, we need to have 2 LiOH on the reactant side.
The equation becomes: 2LiOH + CO2 → Li2CO3 + H2O
Now, count the atoms again:
On the left side (Reactants):
- Li: 2
- O: 3 (2 from 2LiOH and 1 from CO2)
- H: 2
- C: 1
On the right side (Products):
- Li: 2
- O: 3 (3 from Li2CO3 and 1 from H2O)
- H: 2
- C: 1
- Now, the number of atoms for each element is the same on both sides of the equation, so the equation is balanced.
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