Balancing Redox Equations (Leaving Cert Chemistry): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
Why is a systematic approach based on oxidation numbers more effective for complex redox reactions?
Why is a systematic approach based on oxidation numbers more effective for complex redox reactions?
It focuses on electron transfer
What is the purpose of Step 1 in balancing redox equations?
What is the purpose of Step 1 in balancing redox equations?
Assign oxidation numbers to all atoms
In Step 2, what should you look for?
In Step 2, what should you look for?
Elements with different oxidation states
What does an increase in oxidation number represent?
What does an increase in oxidation number represent?
Loss of electrons (oxidation)
What does a decrease in oxidation number represent?
What does a decrease in oxidation number represent?
Gain of electrons (reduction)
What is the key requirement in Step 4?
What is the key requirement in Step 4?
Electrons lost must equal electrons gained
In Step 5, which atoms are typically balanced last?
In Step 5, which atoms are typically balanced last?
Oxygen, then hydrogen
What two things must you verify when checking a balanced redox equation?
What two things must you verify when checking a balanced redox equation?
Atoms and charges are equal
In the permanganate-iron reaction, what is the ratio of to ?
In the permanganate-iron reaction, what is the ratio of to ?
1:5
In the copper-nitric acid reaction, how many electrons does each copper atom lose?
In the copper-nitric acid reaction, how many electrons does each copper atom lose?
2 electrons
In the iodine-thiosulfate reaction, what is the ratio of to ?
In the iodine-thiosulfate reaction, what is the ratio of to ?
1:2
What is a critical mistake to avoid when balancing redox equations?
What is a critical mistake to avoid when balancing redox equations?
Forgetting to balance the charge