Constructing Balanced Ionic Equations

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SUMMARY

The balanced ionic equation for the half-reactions provided is 2Al + 6H+ → 2Al3+ + 3H2. The user initially proposed a different equation, but it was confirmed that the book's answer of 4Al + 6H+ → 2Al3+ + 3H2 is incorrect. The correct balancing reflects the stoichiometry of aluminum and hydrogen ions in the reaction.

PREREQUISITES
  • Understanding of oxidation-reduction reactions
  • Familiarity with ionic charges and balancing equations
  • Knowledge of half-reactions in electrochemistry
  • Basic skills in stoichiometry
NEXT STEPS
  • Study the principles of balancing redox reactions
  • Learn about half-reaction methods in electrochemistry
  • Explore the concept of oxidation states and their role in reactions
  • Practice with additional examples of ionic equations
USEFUL FOR

Chemistry students, educators, and anyone studying electrochemistry or redox reactions will benefit from this discussion.

Priyadarshini
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Homework Statement


Write a balanced ionic equation for the half equations given below:
Al----> Al^+3 + 3e-
2H^+1 + 2e- -----> H2

Homework Equations

The Attempt at a Solution


I think the answer is:
2Al + 6H^+1 ----> 2Al^+3 + 3H2
But the answer in the book is:
4Al + 6H^+1 ----> 2Al^+3 + 3H2
What is the correct answer?
 
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Answer in the book is not correctly balanced - so it is wrong.
 
Thanks!
 

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