Author: Anonymous

For the reaction: 2 NO (g) + Cl2 (g)  ⇌  2 NOCl(g),   Keq = 2500If a chemist runs the reaction with the following initial pressures: P(NO) = 3.0 atm  P(Cl2) = 12.0 atm  P(NOCl) = 175 atm Calculate Q and determine which way the reaction will shift to reach equilibrium.(That is, which of the following is entirely correct?) a. Q = 2500, no shift occurs. b. Q = 284, reaction shifts to the right.  c. Q = 284, reaction shifts to the left. d. Q = 4.86, reaction shifts to the right. e. Q = 4.86, reaction shifts to the left. Tables.pdf Periodic Table with New Elements.pdf

Classify H2CO3 as a strong acid, weak acid, strong base, or weak base, and then answer the following question. What is the pH of 0.05 M H2CO3 (aq)?   a. 3.84 b. 6.38 c. 3.19 d. 1.30 e. 10.16 Tables.pdf Periodic Table with New Elements.pdf

If pOH = 11.4, what is [H+]?   a. 4.0 x 10-12 M b. 2.5 x 1011 M c. 4.0 x 102 M d. 2.5 x 10-3 M e. 4.1 x 10-2 M Tables.pdf Periodic Table with New Elements.pdf

Which of the following is Hydroxide ion?   a. O2- b. O2 2- c. OH- d. OH+ e. H3O+ Tables.pdf Periodic Table with New Elements.pdf

For a chemical reaction at a given temperature, which one of the following statements about Q and Keq istrue? a. If Q > Keq , the reaction will shift to the right to reach equilibrium.b. The reaction can have only one Q value.c. Keq is calculated by plugging in initial pressures or concentrations.d. Q and Keq cannot be equal.e. The reaction can have only one Keq value.   Tables.pdf Periodic Table with New Elements.pdf

What is the correct formula for Aluminum oxide?   a. AlO2 b. Al2(O2)3 c. AlO d. Al2O3 e. Al2O Tables.pdf Periodic Table with New Elements.pdf

Which of the following is a weak acid? a. Sr(OH)2 b. NH3 c. HF d. HNO3 e. HClO4 Tables.pdf Periodic Table with New Elements.pdf

What is the correct formula for Ammonium sulfite? a. (NH3)2SO3 b. (NH4)2SO4 c. NH4SO4 d. (NH4)2S e. (NH4)2SO3 Tables.pdf Periodic Table with New Elements.pdf    

Which of the following compound(s) is (are) ionic? 1. BaBr2          2. Fe2(CO3)3        3. Sr(OH)2         4. SO2   5. C6H12O6   a. 1 and 2 only b. 1, 2, and 3 only c. 4 and 5 only d. 1, 2, 3, and 4 only e.  All are ionic Tables.pdf Periodic Table with New Elements.pdf

Write the correct dissolving equation for Al(OH)3 (s) on scratch paper, and then answer the following question. What is the correct Ksp expression for the dissolving of Al(OH)3 (s)?   a.  Ksp = [Al3+] [OH-]3 b.  Ksp = [Al3+] [O2-]3[H+]3 c. Ksp = [Al3+]3 [OH-] d. Ksp = [Al3+] [OH-] e. Ksp = [Al3+] 3[OH-] Tables.pdf Periodic Table with New Elements.pdf