Practice Final

# Part iv multiple choice worth 3 points each 1 if k c

This preview shows pages 3–5. Sign up to view the full content.

(48) Part IV: Multiple Choice. Worth 3 points each. ____ 1. If K c = 1.6 x 10 10 at 300 o C for the reaction 2 SO 3 (g) ! " ! # ! ! 2 SO 2 (g) + O 2 (g) then what is K c at 300 o C for the reaction below? SO 2 (g) + 1/2 O 2 (g) ! " ! # ! ! SO 3 (g) a) 1.3 x 10 5 b) 6.3 x 10 9 c) 7.9 x 10 4 d) 1.6 x 10 10 ____ 2. What is the relationship between K p and K c for the equation below? CH 3 OH(g) ! " ! # ! ! CO(g) + 2 H 2 (g) ____ 3. What is the pH of pure water at 62 o C if K w = 2.9 x 10 13 at this temperature? ____ 4. HPO 4 2– is the conjugate base of a) H 3 PO 4 b) H 2 PO 4 c)HPO 4 –2 d) PO 4 –3 ____ 5. Which is the stronger acid in the reaction below in which K c = 100 ? H 2 X + H 2 Y ! " ! # ! ! HX + H 3 Y + ____ 6. When equal molar solutions of the following compounds are prepared, the pH will be lowest for a) NaNO 3 b) Mg(CH 3 CO 2 ) 2 c) Zn(NO 3 ) 2 d) BaCl 2 ____ 7. One-hundredth molar solutions of the following acids have a pH = 2.00 except for a) HF b) HCl c) HBr d) HI ____ 8. The formulas and K a values of four ions are listed: HSO 4 1.2 x 10 2 NH 4 + 5.6 x 10 10 Fe(H 2 O) 6 3+ 6.0 x 10 3 HCO 3 5.7 x 10 11 Which of the following is the strongest base? a) SO 4 2– b) NH 3 c) Fe(H 2 O) 5 (OH) 2+ d) CO 3 2– ____ 9. According to molecular orbital theory, which of the following species will be paramagnetic? a) H 2 b) Li 2 c) Be 2 d) B 2 _____ 10. Which of the following general statements is NOT true with regard to the sequence of hybrid orbitals in this order : sp sp 2 sp 3 d 2 sp 3 a) the number of hybrid orbitals of each type increases b) the bond angles between the hybrid orbitals increases

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Page 4 c) the number of atomic orbitals contributing to each hybrid increases d) the number of electron pairs about the central atom increases. _____ 11. A room was completely filled with nitrogen gas. Four balloons were filled with oxygen, fluorine, neon, and chlorine gases respectively. When the balloons were placed in the nitrogen filled room which balloon floated off the floor? a) oxygen filled b) fluorine filled c) neon filled d) chlorine filled
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern