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Questions and Answers
Which of the following statements correctly predicts the outcome of the reaction between lead (Pb) and calcium acetate ($Ca(C_2H_3O_2)_2$)?
Which of the following statements correctly predicts the outcome of the reaction between lead (Pb) and calcium acetate ($Ca(C_2H_3O_2)_2$)?
- Acetates are universally soluble, ensuring the reaction proceeds to completion.
- Lead will replace calcium in the compound, forming lead acetate and elemental calcium.
- Lead will react with the acetate ion, leading to the formation of a lead-acetate complex and calcium metal.
- Lead is less reactive than calcium and will not displace it in a single replacement reaction. (correct)
In an anionic single replacement reaction that produces chlorine gas, what halogen must have been displaced?
In an anionic single replacement reaction that produces chlorine gas, what halogen must have been displaced?
- Bromine
- Astatine
- Iodine
- Fluorine (correct)
What type of chemical reaction occurs when sodium metal is placed in water?
What type of chemical reaction occurs when sodium metal is placed in water?
- Decomposition reaction
- Electrolysis
- Double replacement reaction
- Single replacement reaction (correct)
In a chemical reaction, what term describes a solid that separates from the solution?
In a chemical reaction, what term describes a solid that separates from the solution?
What is the most likely outcome when strontium metal is added to a solution of aluminum chloride?
What is the most likely outcome when strontium metal is added to a solution of aluminum chloride?
What do the coefficients represent in the correctly balanced chemical equation: $NH_4NO_2(s)
ightarrow N_2(g) + H_2O(l)$?
What do the coefficients represent in the correctly balanced chemical equation: $NH_4NO_2(s) ightarrow N_2(g) + H_2O(l)$?
Predict the outcome of the following reaction: $Ca(NO_3)_2 + 2HBr
ightarrow CaBr_2 + 2HNO_3$
Predict the outcome of the following reaction: $Ca(NO_3)_2 + 2HBr ightarrow CaBr_2 + 2HNO_3$
Consider the reaction where iron(III) oxide ($Fe_2O_3$) reacts with carbon monoxide ($CO$) to produce iron ($Fe$) and carbon dioxide ($CO_2$). If 160 kg of $Fe_2O_3$ reacts with 90 kg of $CO$, and the reaction yields 100 kg of $Fe$, what is the theoretical yield of $Fe$ in this reaction?
Consider the reaction where iron(III) oxide ($Fe_2O_3$) reacts with carbon monoxide ($CO$) to produce iron ($Fe$) and carbon dioxide ($CO_2$). If 160 kg of $Fe_2O_3$ reacts with 90 kg of $CO$, and the reaction yields 100 kg of $Fe$, what is the theoretical yield of $Fe$ in this reaction?
During a chemical reaction, 5 grams of reactant A (molar mass = 50 g/mol) react with 10 grams of reactant B (molar mass = 25 g/mol). Which reactant is the limiting reactant?
During a chemical reaction, 5 grams of reactant A (molar mass = 50 g/mol) react with 10 grams of reactant B (molar mass = 25 g/mol). Which reactant is the limiting reactant?
Which of the following is an example of a reaction where the mass of the products appears to be less than the mass of the reactants?
Which of the following is an example of a reaction where the mass of the products appears to be less than the mass of the reactants?
In the balanced chemical reaction $4Al(s) + 3O_2(g) \rightarrow 2Al_2O_3(s)$, if 108 grams of aluminum (Al) completely reacts, what mass of aluminum oxide ($Al_2O_3$) is produced, assuming the reaction proceeds with 100% yield? (Molar mass: Al = 27 g/mol, $Al_2O_3$ = 102 g/mol)
In the balanced chemical reaction $4Al(s) + 3O_2(g) \rightarrow 2Al_2O_3(s)$, if 108 grams of aluminum (Al) completely reacts, what mass of aluminum oxide ($Al_2O_3$) is produced, assuming the reaction proceeds with 100% yield? (Molar mass: Al = 27 g/mol, $Al_2O_3$ = 102 g/mol)
In a chemical reaction, both the number of atoms and the number of molecules are always conserved.
In a chemical reaction, both the number of atoms and the number of molecules are always conserved.
Write a balanced chemical equation for the complete combustion of propane ($C_3H_8$).
Write a balanced chemical equation for the complete combustion of propane ($C_3H_8$).
In a reaction, if the actual yield of a product is lower than the theoretical yield, the ______ yield represents the ratio of the actual yield to the theoretical yield, expressed as a percentage.
In a reaction, if the actual yield of a product is lower than the theoretical yield, the ______ yield represents the ratio of the actual yield to the theoretical yield, expressed as a percentage.
Match each reaction type with its correct description:
Match each reaction type with its correct description:
Flashcards
Single Replacement Reaction
Single Replacement Reaction
A reaction where one element replaces another in a compound.
Double Replacement Reaction
Double Replacement Reaction
A reaction where ions in two compounds switch places.
Precipitate
Precipitate
A solid that forms and separates from a solution during a chemical reaction.
Catalyst
Catalyst
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(aq)
(aq)
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Synthesis Reaction
Synthesis Reaction
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Combustion Reaction
Combustion Reaction
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Chemical Reaction
Chemical Reaction
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Magnesium Hydroxide Formula
Magnesium Hydroxide Formula
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Atoms in KClO3
Atoms in KClO3
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Balanced Equation Coefficients
Balanced Equation Coefficients
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Balanced Equation Example
Balanced Equation Example
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Atoms in 4Al2O3
Atoms in 4Al2O3
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Chemical Reaction Example
Chemical Reaction Example
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Reaction Type of Zn + 2HCl
Reaction Type of Zn + 2HCl
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Study Notes
- Chemical reactions involve changes in matter.
- The mass of reactants equals the mass of products in a chemical reaction.
- Atoms are neither created nor destroyed, but rearranged.
Chemical Formulas
- The chemical formula for magnesium hydroxide is Mg(OH)2.
- In KClO3, one formula unit contains 1 potassium (K), 1 chlorine (CI), and 3 oxygen (O) atoms.
Balanced equations
- The correctly balanced equation Fe₂O₃ + 3CO → 2Fe + 3CO₂ has coefficients 1, 3, 2, 3.
- H₂ + Br₂ → 2HBr is a balanced equation.
- 4Al₂O₃ contains 8 aluminum (Al) atoms and 12 oxygen (O) atoms.
Reaction types
- Gasoline combusting in a car engine represents a chemical reaction.
- Zn(s) + 2HCl(aq) → ZnCl₂(aq) + H₂(g) is a single replacement reaction.
- 2Na + Cl₂ → 2NaCl is a balanced equation.
- Decomposition involves a single reactant breaking down into other substances.
Predicting Reactions
- The reaction Pb + Ca(C₂H₃O₂)₂ → Ca + Pb(C₂H₃O₂)₂ will not occur because lead cannot replace calcium.
- Fluorine will replace chlorine in an anionic single replacement reaction to produce chlorine gas.
- A single replacement reaction occurs when sodium is placed in water.
- A solid that separates from a solution during a chemical reaction is called a precipitate.
- When strontium metal is added to a solution of aluminum chloride, aluminum metal is produced.
- (aq) symbolizes a substance dissolved in water in a chemical equation.
- A chemical formula written over the arrow in a chemical equation signifies a catalyst for the reaction.
- The correctly balanced chemical formula equation is NH₄NO₂(s) → N₂(g) + 2H₂O(l) with coefficients 1, 1, 2.
- The reaction Ca(NO₃)₂ + 2HBr → CaBr₂ + 2HNO₃ will not occur.
- No precipitate will form when solutions of CaCO₃ and Al₂(SO₄)₃ are mixed together, all products are soluble.
Reaction Identification
- Ca + O₂ → CaO represents synthesis.
- C₄H₁₀ + O₂ → CO₂ + H₂O represents combustion.
- NH₄NO₂ → NH₃ + H₂O represents decomposition.
- Al + Fe(NO₃)₂ → Al(NO₃)₃ + Fe represents single replacement.
- MgO + HCI → MgCl₂ + H₂O represents double replacement.
- (NH₄)₃PO₄ + Sr(OH)₂ → Sr₃(PO₄)₂ + NH₄OH represents double replacement.
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