Questions and Answers
What coefficients would balance the equation Al + O2 → Al2O3?
4Al + 3O2 → 2Al2O3
What coefficients would balance the equation C2H6 + O2 → CO2 + H2O?
2C2H6 + 7O2 → 4CO2 + 6H2O
Classify the chemical reaction: Mg + H2SO4 → MgSO4 + H2.
Single replacement
Classify the chemical reaction: CaCO3 → CaO + CO2.
Signup and view all the answers
Which of the following is an example of a double replacement reaction?
Signup and view all the answers
Study Notes
Balancing Chemical Equations
- To balance the equation Al + O2 → Al2O3, use coefficients 4, 3, and 2 respectively: 4Al + 3O2 → 2Al2O3.
- For the combustion reaction C2H6 + O2 → CO2 + H2O, the balanced equation is 2C2H6 + 7O2 → 4CO2 + 6H2O.
Types of Chemical Reactions
- The reaction Mg + H2SO4 → MgSO4 + H2 is classified as a single replacement reaction, where magnesium displaces hydrogen.
- The decomposition reaction CaCO3 → CaO + CO2 breaks down calcium carbonate into calcium oxide and carbon dioxide.
Identifying Reaction Types
- An example of a double replacement reaction is BaCl2 + K2CO3 → BaCO3 + 2KCl, where two compounds exchange partners.
- Other reactions include combinations (like 3Fe + 2O2 → Fe3O4) and decompositions (like NiCO3 → NiO + CO2).
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge on balancing chemical equations with these flashcards. Each card presents a chemical reaction that needs its coefficients balanced or asks for the classification of the reaction type. Perfect for reviewing key concepts in chemistry!
