Which compound has the highest boiling point: HF, HCl, HBr or HI?
Answer and explanation
Correct answer: C. HF
- Step 1: Hydrogen fluoride forms strong hydrogen bonds between molecules. Step 2. The other hydrogen halides rely on weaker forces. Answer: HF. Why not the others: Methane and ethane are nonpolar hydrocarbons with weak London dispersion forces, and hydrogen sulfide exhibits dipole-dipole attractions but lacks the intense hydrogen bonding present in water.
Practise more Structure, Reactions and Equilibrium.
Free questions with an explanation for every one, and full timed AP (Advanced Placement) mock tests.
More Structure, Reactions and Equilibrium questions
- How many moles of water are in 36 grams of H2O? (molar mass 18 g/mol)
- Which element has the largest atomic radius?
- What is the ground-state electron configuration of an iron atom (atomic number 26)?
- What is the molecular geometry of ammonia, NH3?
- A gas is held at constant temperature and its pressure is doubled. What happens to its volume?
- A reaction is second order in reactant A. What happens to the rate if the concentration of A is doubled?