CaCl2(aq)+ NaHCO3(aq) =CO2(g)+ CaCO3(aq)+ NaCl(aq) +H2O(l)
could some one explain to me how to balance the equation?
please
two C on the right, so add a two on the left
CaCl2 + 2 NaHCO3 -->
... CO2 + CaCO3 + 2 NaCL + H2O
add a two on the right to balance Na
thank you
To balance the equation, you need to make sure that there is an equal number of atoms on both sides of the equation. Here's a step-by-step guide to balance the given equation:
Step 1: Count the number of atoms for each element on both sides of the equation.
On the left-hand side (reactants):
- Ca: 1
- Cl: 2
- Na: 1
- H: 1
- C: 1
- O: 3
On the right-hand side (products):
- C: 1
- O: 4
- Ca: 1
- Na: 1
- Cl: 1
- H: 2
Step 2: Begin by balancing the elements that appear in the fewest compounds (usually metals or polyatomic ions).
a) Balance calcium (Ca):
There is already 1 Ca atom on both sides, so it's balanced.
b) Balance chlorine (Cl):
There are 2 Cl atoms on the left, but only 1 Cl atom on the right. To balance them, put a coefficient of 2 in front of NaCl on the right-hand side.
CaCl2(aq) + NaHCO3(aq) = CO2(g) + CaCO3(aq) + 2NaCl(aq) + H2O(l)
Step 3: Balance sodium (Na):
There is 1 Na atom on both sides, so it's balanced now.
Step 4: Balance hydrogen (H):
There is 1 H atom on both sides, so it's already balanced.
Step 5: Balance carbon (C):
There is 1 C atom on both sides, so it's already balanced.
Step 6: Balance oxygen (O):
There are 3 O atoms on the left, but 4 O atoms on the right. To balance them, put a coefficient of 4 in front of CO2 on the left-hand side.
CaCl2(aq) + NaHCO3(aq) = 4CO2(g) + CaCO3(aq) + 2NaCl(aq) + H2O(l)
Now the equation is balanced with equal numbers of atoms on both sides.
To balance the given chemical equation:
1. Start by counting the number of atoms for each element on both sides of the equation.
On the left side of the equation (reactants):
- Calcium (Ca): 1 atom
- Chlorine (Cl): 2 atoms
- Sodium (Na): 1 atom
- Hydrogen (H): 1 atom
- Carbon (C): 1 atom
- Oxygen (O): 4 atoms
On the right side of the equation (products):
- Carbon (C): 1 atom
- Oxygen (O): 4 atoms
- Calcium (Ca): 1 atom
- Chlorine (Cl): 1 atom
- Sodium (Na): 1 atom
- Hydrogen (H): 2 atoms
- Oxygen (O): 1 atom
2. Balance the elements one at a time, starting with the most complex or the elements that appear in the fewest compounds.
Let's start by balancing the calcium atoms. There is 1 calcium atom on both sides of the equation, so calcium is already balanced.
3. Next, balance the chlorine atoms. There are 2 chlorine atoms on the left side, but only 1 on the right side. To balance this, add a coefficient of 2 in front of NaCl on the right side.
CaCl2(aq) + NaHCO3(aq) = CO2(g) + CaCO3(aq) + 2NaCl(aq) + H2O(l)
4. Now, balance the sodium atoms. There is 1 sodium atom on both sides of the equation, so sodium is balanced.
5. Balance the hydrogen atoms. There is 1 hydrogen atom on the left side and 2 on the right side. To balance this, add a coefficient of 2 in front of NaHCO3 on the left side.
CaCl2(aq) + 2NaHCO3(aq) = CO2(g) + CaCO3(aq) + 2NaCl(aq) + H2O(l)
6. Finally, balance the carbon atoms. There is 1 carbon atom on both sides of the equation, so carbon is already balanced.
The balanced equation is:
CaCl2(aq) + 2NaHCO3(aq) = CO2(g) + CaCO3(aq) + 2NaCl(aq) + H2O(l)