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. dipole- dipole intraction is strong . so it is strong permanent dipole moment

    d. have a permanent dipole moment

7. A homogeneous mixture of two are more substance is called solution

b. a solution

8. d. A weak acid has a very low concentration

9. b. electron -electron repulsive force

10. N2O5 has more atomicity 7

no of atoms = no of moles * 6.023*10^23 * atomicity

                            = 1*6.023*10^23 *7 >>>>>answer ................b

11. c. SP^3

12. a

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