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Questions and Answers
What is the general pattern for single displacement reactions?
What is the general pattern for single displacement reactions?
- AB + CD → AC + BD
- A + B → AB
- A + BC → AC + B (correct)
- AB + AC → BC + A
In a double displacement reaction, what is typically exchanged between the reactants?
In a double displacement reaction, what is typically exchanged between the reactants?
- Negatively charged ions only
- Atoms of different elements in the compounds (correct)
- Positive ions only
- Hydrogen ions exclusively
Which factor contributes to the formation of a precipitate in a double displacement reaction?
Which factor contributes to the formation of a precipitate in a double displacement reaction?
- Phase of the reactants involved
- Solubility of ions in water (correct)
- Presence of hydrogen gas
- Temperature of the solution
In a reaction between a metal and an acid, what role does hydrogen play?
In a reaction between a metal and an acid, what role does hydrogen play?
What occurs during a single displacement reaction involving an ionic compound and a metal?
What occurs during a single displacement reaction involving an ionic compound and a metal?
Flashcards
Single Displacement Reaction
Single Displacement Reaction
A reaction where one element replaces another element in a compound.
Single Displacement Reaction: Metal
Single Displacement Reaction: Metal
In a single displacement reaction, if a metal is involved, it will replace the metal in the compound.
Single Displacement Reaction: Non-metal
Single Displacement Reaction: Non-metal
In a single displacement reaction, if a non-metal is involved, it will replace the non-metal in the compound.
Double Displacement reaction
Double Displacement reaction
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Precipitate
Precipitate
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Study Notes
Single Displacement Reactions
- In a single displacement reaction, one element replaces another element in a compound.
- If the reacting element is a metal, it replaces the metal in the compound.
- If the reacting element is a non-metal, it replaces the non-metal in the compound.
- In reactions involving an ionic compound and a metal, the positive ion (cation) is displaced.
- Example: Ca + I₂ → CaI₂ + I₂
- Single displacement reactions frequently happen in aqueous solutions where the polyatomic ions don't break down..
- Reactions can also happen when metals are added to acids. Acids contain hydrogen atoms. Metals displace hydrogen in acids.
- General pattern: A + BC → AC + B
Double Displacement Reactions
- In a double displacement reaction, elements from different compounds swap places.
- Metals replace metals; non-metals replace non-metals
- Metals can replace hydrogen
- Usually involve two ionic compounds in a solution.
- If an insoluble compound forms, it separates as a precipitate.
- Precipitate is a solid in a liquid solution.
- Not all double displacement reactions form precipitates.
- General pattern: AB + CD → AD + CB
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Description
This quiz covers the concepts of single and double displacement reactions in chemistry. You will learn how elements replace each other in these reactions and the conditions under which they occur. Test your understanding of the patterns and examples associated with these important types of chemical reactions.
