Questions and Answers
What is the product of the reaction 2KOH + H₂?
What is formed when KOH + Ag reacts?
The reaction 2HF + I₂ results in a reaction.
False
What products are formed from 2HF + Cl₂?
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What is a single-replacement reaction?
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What is the product of ZnSO₄ + H₂?
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What is the product of the reaction 2NaCl + Br₂?
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What is the result of 2 KCl + I₂?
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What is produced in the reaction Cu(NO₃)₂ + 2 Ag?
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How many reactants are in a single-replacement reaction?
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How many products are in a single-replacement reaction?
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What is the symbol for the most active metal?
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What is the symbol for the most active nonmetal?
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What is another term for replacement?
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What is the activity series?
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What is the symbol for the least active metal?
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The reaction FeSO₄ + Au results in a reaction.
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What does activity refer to in chemistry?
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What is the product of the reaction 2KBr + I₂?
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Study Notes
Single Replacement Reactions
- A more reactive element displaces a less reactive element within a compound during a single-replacement reaction.
Chemical Reactions
- 2KOH + H₂ converts to 2K + 2H₂O, indicating potassium displacing hydrogen from potassium hydroxide.
- KOH + Ag results in AgOH + K, demonstrating silver replacing potassium.
- 2HF + I₂ shows no reaction, indicating iodine does not replace fluorine due to lower reactivity.
- 2HF + Cl₂ produces 2HCl + F₂, showing chlorine displacing fluorine.
- ZnSO₄ + H₂ yields Zn + H₂SO₄, where hydrogen replaces zinc in sulfate.
- 2NaCl + Br₂ results in Cl₂ + 2NaBr, illustrating bromine replacing chlorine.
- 2 KCl + I₂ generates 2KI + Cl₂, with iodine replacing chlorine.
- Cu(NO₃)₂ + 2 Ag results in 2 AgNO₃ + Cu, where silver replaces copper in nitrate.
Reactants and Products
- Typically, two reactants and two products are present in single-replacement reactions.
Reactive Elements
- Li is the symbol for the most active metal, indicating its strong tendency to undergo displacement.
- F represents the most active nonmetal, highlighting its reactivity with metals.
Additional Terms
- Displacement is synonymous with replacement in reaction terminology.
- The activity series ranks elements by reactivity, aiding in predicting single-replacement reactions.
- Au symbolizes the least active metal, illustrating its low tendency to participate in such reactions.
No Reaction Situations
- In cases like FeSO₄ + Au, no reaction occurs because gold is less reactive than iron.
Activity Definition
- Activity refers to an element's tendency to combine with other substances, influencing its ability to displace less active elements.
Conclusion
- 2KBr + I₂ results in Br₂ + 2KI, showing another instance of displacement in a classic single-replacement reaction.
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Test your knowledge of single replacement reactions with these flashcards. Each card presents a chemical reaction, helping you understand how reactive elements displace less reactive ones. Perfect for chemistry students looking to reinforce their learning!
