Blog

What is the correct name of NO2- ?- a. nitride b. nitrate c. nitrogen trioxate d. nitrite e. nitrogenoxite

What is the correct formula for Aluminum oxide?   a. AlO2 b. Al2(O2)3 c. AlO d. Al2O3 e. Al2O

What is the pH of 0.05 M ClO- (aq) from the previous problem.   a. 9.59 b. 3.89 c. 10.11 d. 12.70 e. 4.41

Classify NH3 as a strong acid, weak acid, strong base, or weak base, and then answer the following question. What is the pH of 1.17 M NH3 (aq)?   a. 4.59 b. 11.66 c. 2.34 d. 9.41 e. 9.25

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

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

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