_ Na2O + _ CaBr2 → _ NaBr + _ CaO
a
1:1:1:2
b
2:1:1:1
c
1:2:1:1
d
1:1:2:1
The balanced equation for the reaction is:
2 Na2O + CaBr2 → 4 NaBr + CaO
Therefore, the correct answer is:
b) 2:1:1:1
To balance the chemical equation:
Na2O + CaBr2 → 2 NaBr + CaO
The answer would be:
c) 1:2:1:1
To balance the chemical equation: Na2O + CaBr2 → 2NaBr + CaO, we need to ensure that the number of atoms on both sides of the equation is the same.
To figure out the correct coefficients for the equation, we can start by identifying the elements involved and counting the number of atoms on each side:
On the left-hand side (reactants):
- Sodium (Na): 2 atoms
- Oxygen (O): 1 atom
- Calcium (Ca): 1 atom
- Bromine (Br): 2 atoms
On the right-hand side (products):
- Sodium (Na): 2 atoms
- Bromine (Br): 2 atoms
- Calcium (Ca): 1 atom
- Oxygen (O): 1 atom
Now, we can compare the number of atoms for each element on both sides of the equation. We start with the elements that appear only once on each side:
For Calcium (Ca), the left side has 1 atom, while the right side has 1 atom. Therefore, Ca has a coefficient of 1 on both sides.
For Oxygen (O), the left side has 1 atom, while the right side also has 1 atom. Therefore, O has a coefficient of 1 on both sides.
Now we move on to elements that have different numbers of atoms on each side:
For Sodium (Na), the left side has 2 atoms, while the right side has 2 atoms. Therefore, Na has a coefficient of 2 on both sides.
For Bromine (Br), the left side has 2 atoms, while the right side has 2 atoms. Therefore, Br also has a coefficient of 2 on both sides.
So, the balanced equation is: 2Na2O + CaBr2 → 4NaBr + CaO.
From the options given, the correct answer is (a) 1:1:1:2.