For a molecule to exhibit dipole-dipole interactions, it must _____ a. have a te

Question

For a molecule to exhibit dipole-dipole interactions, it must _____ a. have a temporary dipole moment. b. have three or more atoms. c. have a hydrogen bound to an oxygen, nitrogen, or fluorine. d. have a permanent dipole moment. e. be an ion. A homogeneous mixture of two or more substances is called _____ a. a mess. b. a solution. c. a compound. d. a solvent. e. an electrolyte. Which one of the following statements regarding a weak acid is NOT correct? a. Acetic acid is an example. b. A weak acid neutralizes bases. c. A weak acid ionizes in water to produce hydronium ions. d. A weak acid has a very low concentration. e. A weak acid ionizes only to a small extent in water. In VSEPR theory, molecular geometry is determined by _____ a. electron-nucleus attractive forces. b.electron-electron repulsive forces. c.electron-proton attractive forces. d. proton-proton repulsive forces. e. electron-electron attractive forces. Which of the following contains the largest number of atoms? a. 1 mol water b. 1 mol dinitrogen pentoxide c. 2 mol carbon monoxide d. 1 mol phosphorus trichloride e. All of these contain the same number of atoms. What is the hybridization of arsenic in AsCl_3? a. sp^2 b. sp c. sp^3 d. sp^3 d^2 e. sp^3 d Ion-dipole forces always require a. an ion and a polar molecule. b. a cation and a water molecule. c. an ion and a water molecule. d. an anion and a polar molecule. e. a polar and a nonpolar molecule.

Explanation / Answer

6) a and d both are correct. The first thing required for there to be dipole-dipole interactions between molecules is for both molecules to have a dipole. These dipoles may be permanent (polar molecules) or temporary (instantaneous or induced dipoles in non-polar molecules).

7)b. A solution is a homogeneous mixture of two or more substances. Its composition is the same throughout, i.e. concentration of the substances is the same. A solution can be made of substances in different phases.

8) d the correct statement is weak acid has less H+ ion concentration.

9)b. Valence shell electron pair repulsion (VSEPR) theory ,the name itself has the answer.

10) c. Each mole contain Avogadro number of atoms. So twomoles contain more number of atoms.

11)c sp3 hybridisation.

12) a an ion and a polar molecule

Related Questions

Navigate

• Browse (All)
• Browse F
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.