University:
Jackson College
Course:
CEM-141 | General Chemistry I
Academic year:

2024
Views:

184

Pages:

5
Author:

Cecilia Benson

Quiz REVIEW Chem 12 Unit 4 pH of Acids / Bases / Salts Determine whether solutions of the following compounds will be acidic, basic or neutral. Assume each solution has a concentration of 0.500 M. In order to prepare for the quiz thoroughly, be sure to show a COMPLETE mathematical solution and fully write out your reasoning / explanations. This will be required in order to receive full marks for each quiz question. For some questions (marked with a *) you will be asked to continue on and calculate the pH of the solution. *HI *NH4ClO4 HC6H5O7 -2 *H2SO4 *LiOH Na2SO4 *HBr *NaOH Fe(OH)2 Ca(OH)2 NaCl *HCl *K2SO3 HNO3 *Ba(OH)2 *NH4CH3COO H2O2 NH4HCOO NaHSO4 SrO CO2 *HCN *NaC6H5O Mg(OH)2 *FeCl3 *NaHCO3 K2 C2 O 4 *HF NaHSO3 *H3BO3 Ca(HCO3)2 LiNO3 Strong Acids Weak Acids Strong Bases Weak Bases Salts that are acidic Salts that are basic Salts that are neutral Acidic Anhydrides Basic Anhydrides Strong Acids HI pH = 0.301 HBr pH = 0.301 HCl pH = 0.301 HNO3 H2SO4 Need to do TWO IRE grids! One is 100%  and the second is using Ka value to determine ion concentrations Weak Acids Strong Bases H2O2 HCN pH = 4.81 H3BO3 pH = 4.72 HC6H5O7 -2 Ka > Kb HF pH = 1.88 LiOH pH = 13.699 Ca(OH)2 NaOH pH = 13.699 Ba(OH)2 Weak Bases Fe(OH)2 Mg(OH)2 Salts that are acidic FeCl3 Ka = 6.0 x 10-3 NaHSO3 Ka HSO3-= 1.0 x 10-7 NH4ClO4 NH4+ pH = 4.78 NH4HCOO Ka > Kb NaHSO4 HSO4- Salts that are basic Salts that are neutral K2SO3 Na2SO4 NaHCO3 K2 C2 O 4 NaC6H5O Kb > Ka Ca(HCO3)2 Kb > Ka NaCl LiNO3 NH4CH3COO Ka = Kb Acidic Anhydrides CO2 Basic Anhydrides SrO vs. Kb HSO3-= 6.7 x 10-13 Determine whether solutions of the following compounds will be acidic, basic or neutral. Assume each solution has a concentration of 0.500 M. You must show a COMPLETE mathematical solution and fully write out your reasoning / explanations in order to receive full marks for each question. For some questions (marked with a *) you will be asked to continue on and calculate the pH of the solution. *HI *NH4ClO4 HC6H5O7 -2 *H2SO4 *LiOH Na2SO4 *HBr *NaOH Fe(OH)2 Ca(OH)2 NaCl *HCl *K2SO3 HNO3 *Ba(OH)2 *NH4CH3COO H2 O2 NH4HCOO NaHSO4 CO2 *HCN *FeCl3 *NaHCO3 K2C2O4 NaHSO3 *H3BO3 SrO *NaC6H5O Mg(OH)2 *HF Ca(HCO3)2 LiNO3