ap chemistry 2차 - unit 1
1. Which element reacts violently with water at 298 K? (A) Magnesium (Mg) (B) Aluminum (Al) (C) Potassium (K) (D) Silicon (Si) View Answer Correct Answer: (C) Potassium (K) Explanation: …
1. Which element reacts violently with water at 298 K? (A) Magnesium (Mg) (B) Aluminum (Al) (C) Potassium (K) (D) Silicon (Si) View Answer Correct Answer: (C) Potassium (K) Explanation: …
1. Which statement correctly explains why graphite is softer than diamond despite both being carbon allotropes? (A) Graphite has stronger covalent bonds within layers (B) Diamond lacks delocalized electrons (…
1. Which of the following substances is expected to have the highest boiling point? (A) CH 4 (methane) (B) CO 2 (carbon dioxide) (C) NH 3 (ammonia) (D) H 2 O (water) View Answer Cor…
1. For the reaction 2H₂ + O₂ → 2H₂O, how many moles of H₂O are produced from 4.0 moles of O₂ (assuming excess H₂)? (A) 2.0 moles (B) 4.0 moles (C) 6.0 moles (D) 8.0 moles View Answer C…
Unit 5: Kinetics — Multiple Choice Questions Reaction Rate Collision Theory Rate Law Integrated Rate Law Arrhenius Mechanism & RDS 1. Which statement best defines the reaction…
Unit 6: Thermodynamics — Multiple Choice Questions Exothermic vs Endothermic Calorimetry (Q = mcΔT) Calorimeter Errors (HHI) Hess’s Law Bond & Formation Enthalpy Entropy (ΔS°) Gibbs Free …
Unit 7: Equilibrium — Multiple Choice Questions K Expression Q vs K Le Chatelier Manipulating K Ksp Common Ion Effect Ka · Kb · Kw 1. Chemical equilibrium is the state where:…
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