How do I balance redox equations in acidic reactions, without trial and error, using half equations?
Here is a summary on the steps to complete these question types.
- Determin oxidation numbers 2. Figure out what is being oxidised and what is being reduced. 3. Write half equations. 4. Balance the atoms exclusing O and H. 5. To balance O add H2O, to balance H add H+. 6. Add E- to balance charges. 7. Multiply half equations so the number of electrons on each side =0. 8. Combine the half equations by adding together and cancelling out molecules that appear on both sides. 9. Final check to ensure all is balanced correctly.
IK
Related Chemistry A Level answers
All answers ▸Describe the reasons why the rates of strontium and barium with water is different
Explain why the reactivity of Group 2 elements increases down the group.
Molecules of hydrogen chloride, HCl, and molecules of fluorine, F2, contain the same number of electrons. Hydrogen chloride boils at –85 °C and fluorine boils at –188 °C.Explain why there is a difference in the boiling points of HCl and F2.
Write a balanced equation for the reaction between NaOH and sulfuric acid. A conical flask contains 25cm^3 of 0.124M NaOH, a burette contains 0.0625M sulfuric acid. Find the minimum amount of acid required to completely react with the NaOH in the flask.