Suppose the reaction:   2 HI(g) → H2 (g) + I2 (g)    is second order with respect to HI(g). If k = 0.0332 M-1 x  s-1 and [HI]o = 0.250 M, what is [HI] at time t = 9.3 s? a. 4.31 M b. 0.184 M c. 0.271 M d. 0.00208 M e. 0.232 M   Tables.pdf Periodic Table with New Elements.pdf

What is the correct formula for Sodium chromate? a. Na2CrO4 b. Na(CrO4)2 c. Na(CrO3)2 d. Na2CrO3 e. Na2Cr

Classify Ba(OH)2 as a strong acid, weak acid, strong base, or weak base, write the correct dissolving equation for Ba(OH)2 on scratch paper, and then answer the following question. What is the pH of 7.7 x 10-3 M Ba(OH)2 (aq)?   a. 2.11 b. 11.89 c. 12.19 d. 1.81 e. 9.77

Calculate the overall charge of the Iron (II) complex [Fe(CO)4Cl(SO4)], and then answer the following question. What is the formula of the compound that would form between Na+ and [Fe(CO)4Cl(SO4)]? a. Na [Fe(CO)4Cl(SO4)] b. Na2[Fe(CO)4Cl(SO4)] c. Na3 [Fe(CO)4Cl(SO4)] d. Na6 [Fe(CO)4Cl(SO4)]   Tables.pdf Periodic Table with New Elements.pdf

Look up the Ksp value of each compound below in your CHM132 Tables, and then answer the following question. Which of the following compounds is the least soluble in water?   a. Pb(OH)2 b. PbCl2 c. SrF2 d. PbBr2 e. Mg(OH)2

If [OH-] = 8.7 x 10-10 M, what is the pH?   a.  2.6 b.  9.1 c.  -9.1 d.  4.9 e . -4.9

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.  

What is the correct formula for Ammonium sulfite? a. (NH3)2SO3 b. (NH4)2SO4 c. NH4SO4 d. (NH4)2S e. (NH4)2SO3

Suppose that the reaction: C → products is second order in C and has a rate constant k = 8.76 x 10-3 M-1 . min-1  First write the rate equation,  and then answer the following question. At what [C] will the rate equal 1.11 x 10-5 M . min-1 ? a. 1.3 x 10 -3 M b. 9.7 x 10 -8 M c. 3.1 x 10 -4 M d. 3.6 x 10 -2 M e. 0.40 M   Tables.pdf Periodic Table with New Elements.pdf

What is the overall charge of the Platinum(IV) complex [PtCl2(en)]? a. -1 b. +2 c. 0 d. +4 e. -2   Tables.pdf Periodic Table with New Elements.pdf