Question detail
When balancing the equation for the reaction of hydrogen and oxygen to form water, what is the correct balanced equation?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations
Question
- A. H2 + O2 → H2O
- B. 2H2 + O2 → 2H2O
- C. H2 + 2O2 → H2O
- D. 2H2 + O2 → H2O
Answer
2H2 + O2 → 2H2O
Explanation
The balanced equation 2H2 + O2 → 2H2O shows that two molecules of hydrogen react with one molecule of oxygen to produce two molecules of water, conserving mass.
Common mistake
Misunderstanding Atom Conservation
Students often think that atoms can be created or destroyed during a chemical reaction.
Emphasize that the law of conservation of mass states that no atoms are lost or made; they are simply rearranged.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.