Hi,
I was given the reactants for the chemical reaction and I am supposed to write the product. The equation must be balanced. Can someboy please check my work? Thanks :-)
3NaOH + Fe(NO3)3 --> Fe(OH)3 + 3Na(NO3)
2NH3 --> N2 + 3H2
2H2 + o2 --> 2H2O
4Mg + H2SO4 --> 4MgO + H2S
On the last, active metals and acids yield hydrogen gas and the metallic salt(Magnesium sulfate in this example).
Others are ok.
So the last one would be then
Mg + H2SO4 --> MgSO4 + H2
This is single-replacement reaction, right?
thank you :-)
right, single replacement.
To verify if your chemical equations are balanced correctly, we need to count the number of atoms on both sides of the equation. Let's go through them one by one:
1) 3NaOH + Fe(NO3)3 --> Fe(OH)3 + 3Na(NO3)
- On the left side, we have 3 sodium (Na), 3 oxygen (O), 3 hydrogen (H), 1 iron (Fe), 3 nitrogen (N).
- On the right side, we have 1 iron (Fe), 3 oxygen (O), 3 hydrogen (H), 3 sodium (Na), 3 nitrogen (N).
- It seems like you have the correct ratio of reactants to products. So, this equation is balanced.
2) 2NH3 --> N2 + 3H2
- On the left side, we have 2 nitrogen (N), 6 hydrogen (H).
- On the right side, we have 1 nitrogen (N), 6 hydrogen (H).
- We need to balance the equation. We have an excess of nitrogen on the left side, so let's adjust the equation:
2NH3 --> N2 + 6H2
- Now, the equation is balanced.
3) 2H2 + O2 --> 2H2O
- On the left side, we have 4 hydrogen (H), 2 oxygen (O).
- On the right side, we have 2 hydrogen (H), 2 oxygen (O).
- We need to balance the equation. We have an excess of hydrogen on the left side, so let's adjust the equation:
2H2 + O2 --> 2H2O
- Now, the equation is balanced.
4) 4Mg + H2SO4 --> 4MgO + H2S
- On the left side, we have 4 magnesium (Mg), 1 sulfur (S), 4 oxygen (O), 4 hydrogen (H).
- On the right side, we have 4 magnesium (Mg), 1 sulfur (S), 4 oxygen (O), 1 hydrogen (H).
- We need to balance the equation. We have an excess of hydrogen on the left side, so let's adjust the equation:
4Mg + H2SO4 --> 4MgO + 2H2S
- Now, the equation is balanced.
You are correct. The last equation is a single-replacement reaction. The active metal (Mg) replaces the hydrogen in the acid (H2SO4), forming the corresponding metallic salt (MgSO4) and hydrogen gas (H2).
Please let me know if you have any further questions or need additional explanations.