Name That Bond
The compound SO₂ contains this type of bond, with the more electronegative atom carrying a partial negative charge.
What is a polar covalent bond?
Balance: Al + Br₂ → AlBr₃. What is the coefficient for AlBr₃?
What is 2?
Identify the spectator ions in the reaction between Na₂SO₄(aq) and BaCl₂(aq)
What are Na⁺ and Cl⁻?
In Mg(s) + H₂SO₄(aq) → MgSO₄(aq) + H₂(g), which element is oxidized?
What is Mg?
A hydrocarbon combusts to produce CO₂ and H₂O. This type of reaction is called a ______ reaction.
What is a combustion reaction?
Which molecule violates the octet rule: BF₃, CH₄, CO₂, or H₂O
What is BF₃?
How many moles of CO₂ form when 0.250 mol of C₂H₆ reacts completely with O₂?
What is 0.500 moles of CO₂?
Write the net ionic equation for the reaction between HCl(aq) and NaOH(aq)
What is H⁺ + OH⁻ → H₂O?
Determine the oxidation number of N in NH₄NO₂.
What is –3 for NH₄⁺ N and +3 for NO₂⁻ N?
Determine the empirical formula of a compound that is 40.0% C, 6.7% H, and 53.3% O.
What is CH₂O?
Draw the Lewis structure for ClO₃⁻. How many resonance structures exist?
What is 3 resonance structures?
If 12.0 g of Mg reacts with 14.0 g of HCl, determine the limiting reagent and how many grams of H₂ are formed.
What is HCl is the limiting reagent and 0.387 g H₂ is formed?
Which combination forms a precipitate: Na₂CO₃(aq) + CuCl₂(aq), KNO₃(aq) Li₂SO₄(aq), or NH₄Cl(aq) + NaBr(aq)
What is Na₂CO₃(aq) + CuCl₂(aq) forms a precipitate (CuCO₃)?
Identify the oxidizing and reducing agents in: Zn(s) + CuSO₄(aq) → ZnSO₄(aq) + Cu(s).
What is oxidizing agent Cu²⁺, reducing agent Zn?
A compound with empirical formula CH₂O has a molar mass of 180 g/mol. Find its molecular formula.
What is C₆H₁₂O₆?
For the molecule PF₅, identify the electron pair geometry and molecular geometry
What is trigonal bipyramidal for both electron pair geometry and molecular geometry?
A 0.400 M Na₂CO₃ solution is diluted to 500.0 mL to make a 0.100 M solution. What was the initial volume used?
What is 125 mL?
For the reaction of Pb(NO₃)₂(aq) and Na₂SO₄(aq), write:
The balanced molecular equation
Complete ionic equation
Net ionic equation
Identify all spectator ions
What is:
Molecular: Pb(NO₃)₂ + Na₂SO₄ → PbSO₄↓ + 2 NaNO₃
Net ionic: Pb²⁺ + SO₄²⁻ → PbSO₄↓
Spectator ions: Na⁺, NO₃⁻
Balance the following redox reaction in acidic solution:
Cr₂O₇²⁻ + Fe²⁺ → Cr³⁺ + Fe³⁺
What is Cr₂O₇²⁻ + 6 Fe²⁺ + 14 H⁺ → 2 Cr³⁺ + 6 Fe³⁺ + 7 H₂O?
Determine the empirical formula of a compound containing 21.7 g of nitrogen and 62.3 g of oxygen.
What is N₂O₅?
The molecule NO₂ shows one unpaired electron. Explain why it is paramagnetic and how this relates to its resonance structures.
What is paramagnetic because NO₂ has 1 unpaired electron delocalized in its resonance structures?
When 4.50 g of Al reacts with 8.20 g of Fe₂O₃:
Write the balanced equation.
Determine the limiting reagent.
Calculate moles of Fe produced and grams of Al₂O₃ precipitate formed.
What is Fe₂O₃ is the limiting reagent, 0.103 mol Fe is produced, 5.24 g Al₂O₃ formed?
For the reaction between FeCl₃(aq) and Na₂CO₃(aq):
The balanced molecular equation
Complete ionic equation
Net ionic equation
Identify all spectator ions
What is:
Molecular: 2 FeCl₃ + 3 Na₂CO₃ → Fe₂(CO₃)₃↓ + 6 NaCl
Net ionic: 2 Fe³⁺ + 3 CO₃²⁻ → Fe₂(CO₃)₃↓
Spectator ions: Na⁺, Cl⁻
Balance in acidic solution:
MnO₄⁻ + SO₂ → Mn²⁺ + SO₄²⁻
Identify which species is oxidized and which is reduced.
What is 2 MnO₄⁻ + 5 SO₂ + 2 H₂O → 2 Mn²⁺ + 5 SO₄²⁻ + 4 H⁺; SO₂ oxidized, MnO₄⁻ reduced?
When 0.450 g of an unknown compound containing C, H, and O is combusted, it produces 0.990 g of CO₂ and 0.405 g of H₂O. Determine the empirical formula of the compound.
What is C₈H₁₆O₃?