The equations are not balanced. Which equation would have the same coefficients in the same order as 2CO2 + 3H20 C2H6O + 3O2?
FeCl3 + NH4OH Fe(OH)3 + NH4Cl
CH4 + O2 CO2 + H2O
Fe + H2SO4 Fe2(SO4)3 + H2
PCl5 + H2O HCl + H3PO4
The correct equation that has the same coefficients in the same order as 2CO2 + 3H2O -> C2H6O + 3O2 is CH4 + O2 -> CO2 + H2O. The other equations do not have the same coefficients in the same order as the given equation.
In the given equation, there are 2 molecules of CO2 and 3 molecules of H2O on the reactant side, and 1 molecule of C2H6O and 3 molecules of O2 on the product side. In the equation CH4 + O2 -> CO2 + H2O, there are 1 molecule of CH4 and 1 molecule of O2 on the reactant side, and 1 molecule of CO2 and 1 molecule of H2O on the product side. The coefficients of the elements in the given equation and this equation are the same and in the same order.
To balance an equation, we need to ensure that the number of atoms of each element is the same on both sides. Let's examine the given equation: 2CO2 + 3H2O -> C2H6O + 3O2.
To determine the coefficients that balance the equation, we can start by counting the number of atoms for each element on both sides of the equation:
On the left side:
- Carbon (C): 2 atoms
- Oxygen (O): 6 atoms
- Hydrogen (H): 6 atoms
On the right side:
- Carbon (C): 2 atoms
- Oxygen (O): 8 atoms
- Hydrogen (H): 6 atoms
Comparing the number of atoms, we can see that the equation is not balanced because the number of oxygen atoms differs. To balance the equation, we need to adjust the coefficients of the compounds.
Let's examine each provided equation to find the one that has the same coefficients in the same order as the original equation:
1. FeCl3 + NH4OH -> Fe(OH)3 + NH4Cl:
- Iron (Fe): 1 atom on both sides
- Chlorine (Cl): 3 atoms on the left side, none on the right side
- Nitrogen (N): none on both sides
- Oxygen (O): 1 atom on the left side, 3 atoms on the right side
- Hydrogen (H): 4 atoms on the right side
The coefficients do not match the original equation, so this is not the correct answer.
2. CH4 + O2 -> CO2 + H2O:
- Carbon (C): 1 atom on each side
- Oxygen (O): 2 atoms on the left side, 3 atoms on the right side
- Hydrogen (H): 4 atoms on the left side, 2 atoms on the right side
The coefficients of this equation match the original equation (multiplied by a factor of 1), so this is the correct answer.
3. Fe + H2SO4 -> Fe2(SO4)3 + H2:
- Iron (Fe): 1 atom on both sides
- Sulfur (S): none on both sides
- Oxygen (O): 4 atoms on the left side, 15 atoms on the right side
- Hydrogen (H): 2 atoms on the left side, 2 atoms on the right side
The coefficients do not match the original equation, so this is not the correct answer.
4. PCl5 + H2O -> HCl + H3PO4:
- Phosphorus (P): 1 atom on the right side, none on the left side
- Chlorine (Cl): 5 atoms on the left side, 1 atom on the right side
- Oxygen (O): none on both sides
- Hydrogen (H): 2 atoms on the right side
The coefficients do not match the original equation, so this is not the correct answer.
Therefore, the equation that has the same coefficients in the same order as the original equation 2CO2 + 3H2O -> C2H6O + 3O2 is CH4 + O2 -> CO2 + H2O.
To determine the equation with the same coefficients in the same order, we need to balance the given equations and compare the coefficients.
First, let's balance the equation 2CO2 + 3H2O -> C2H6O + 3O2:
2CO2 + 3H2O -> C2H6O + 3O2
Next, let's examine the options one by one:
1. FeCl3 + NH4OH -> Fe(OH)3 + NH4Cl
2. CH4 + O2 -> CO2 + H2O
3. Fe + H2SO4 -> Fe2(SO4)3 + H2
4. PCl5 + H2O -> HCl + H3PO4
Comparing the coefficients, we can see that option 2, CH4 + O2 -> CO2 + H2O, has the same coefficients in the same order as the given equation.
Therefore, the equation CH4 + O2 -> CO2 + H2O has the same coefficients in the same order as 2CO2 + 3H2O -> C2H6O + 3O2.