Balancing Equations & Reactions Flashcards

Questions and Answers

What is the balanced equation for the combustion of ethane (C2H6)?

C2H6 + 3 O2 → 2 CO2 + 3 H2O

C2H6 + O2 → 2 CO2 + H2O

2 C2H6 + 7 O2 → 4 CO2 + 6 H2O (correct)

C2H6 + O2 → CO2 + H2O

What reaction type is represented by the equation P4 + 5 O2 → 2 P2O5?

Synthesis

What is the balanced equation for the reaction of zinc with hydrochloric acid?

Zn + 3 HCl → ZnCl3 + H2

2 Zn + 2 HCl → ZnCl2 + H2

Zn + 2 HCl → ZnCl2 + H2 (correct)

Zn + HCl → ZnCl2 + H2

What is the balanced equation for the decomposition of potassium chlorate (KClO3)?

2 KClO3 → 2 KCl + 3 O2 Signup and view all the answers

What type of reaction is represented by the equation Ca + 2 HCl → CaCl2 + H2?

Single Replacement Signup and view all the answers

What is the balanced equation for the decomposition of hydrogen peroxide (H2O2)?

2 H2O2 → 2 H2 + O2 Signup and view all the answers

What is the product of the reaction Al + H2SO4?

Al2(SO4)3 + H2 Signup and view all the answers

The reaction Zn + 2 HCl → ZnCl2 + H2 is an example of what type of reaction?

Single Replacement Signup and view all the answers

What is the balanced equation for the combustion of propane (C5H12)?

C5H12 + 8 O2 → 5 CO2 + 6 H2O Signup and view all the answers

What type of reaction is represented by the equation HCl + NaOH → NaCl + H2O?

Neutralization Signup and view all the answers

What is the balanced equation for the reaction NaNO3 + Ag?

NaNO3 + Ag → AgNO3 + Na Signup and view all the answers

What is the type of reaction represented by FeCl3 + 3 NH4OH → Fe(OH)3 + 3 NH4Cl?

Double Replacement Signup and view all the answers

Study Notes

Combustion Reactions

Ethane (C2H6) combusts with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O) in the reaction: 2 C2H6 + 7 O2 → 4 CO2 + 6 H2O.
Methane (CH4) also undergoes combustion yielding CO2 and H2O: CH4 + O2 → CO2 + 2 H2O.
Pentane (C5H12) is another hydrocarbon that combusts to form CO2 and H2O: C5H12 + 8 O2 → 5 CO2 + 6 H2O.

Synthesis Reactions

Phosphorus (P4) reacts with oxygen (O2) to form diphosphorus pentoxide (P2O5): P4 + 5 O2 → 2 P2O5.
Magnesium (Mg) combines with oxygen (O2) to create magnesium oxide (MgO): 2 Mg + O2 → 2 MgO.

Single Replacement Reactions

Zinc (Zn) displaces hydrogen when reacting with hydrochloric acid (HCl): Zn + 2 HCl → ZnCl2 + H2.
Aluminum (Al) reacts with hydrochloric acid to yield aluminum chloride (AlCl3) and hydrogen: 2 Al + 6 HCl → 2 AlCl3 + 3 H2.
Calcium (Ca) reacts with hydrochloric acid, producing calcium chloride (CaCl2) and hydrogen: Ca + 2 HCl → CaCl2 + H2.
Silver (Ag) displaces sodium in sodium nitrate (NaNO3) to form silver nitrate (AgNO3): NaNO3 + Ag → AgNO3 + Na.

Double Replacement Reactions

Iron(III) chloride (FeCl3) reacts with ammonium hydroxide (NH4OH) to form iron(III) hydroxide (Fe(OH)3) and ammonium chloride (NH4Cl): FeCl3 + 3 NH4OH → Fe(OH)3 + 3 NH4Cl.
Aluminum iodide (AlI3) and mercury(II) chloride (HgCl2) react to produce aluminum chloride and mercury(II) iodide: 2 AlI3 + 3 HgCl2 → 2 AlCl3 + 3 HgI2.
Hydrochloric acid reacts with sodium hydroxide (NaOH) to produce sodium chloride (NaCl) and water: HCl + NaOH → NaCl + H2O.

Decomposition Reactions

Potassium chlorate (KClO3) decomposes into potassium chloride (KCl) and oxygen: 2 KClO3 → 2 KCl + 3 O2.
Water (H2O) breaks down into hydrogen (H2) and oxygen (O2): 2 H2O → 2 H2 + O2.
Hydrogen peroxide (H2O2) decomposes to form water and oxygen: 2 H2O2 → 2 H2O + O2.
Calcium chlorate (Ca(ClO3)2) decomposes into calcium chloride (CaCl2) and oxygen: Ca(ClO3)2 → CaCl2 + 3 O2.

Description

Test your knowledge of chemical reactions and their equations with these flashcards. Each card covers different types of reactions, including combustion, synthesis, and decomposition. Perfect for chemistry students looking to reinforce their understanding.