Which of the following is the strongest acid? Choose from:
HC6H5O (Ka = 1.3 x 10-10 ; molar mass = 94.11 g/mol)
HCN (Ka = 4.9 x 10-10 ; molar mass = 27.03 g/mol)
HCHO2 (Ka = 1.8 x 10-4 ; molar mass = 46.03 g/mol)
HNO2 (Ka = 4.6 x 10-4 ; molar mass = 47.01 g/mol)
HClO (Ka = 2.8 x 10-8 ; molar mass = 52.46 g/mol)

What is the conjugate acid of OH-? Choose from:
H2O
NaOH
H3O+
HCl
COOH

Which of the following compounds will produce an acidic solution when dissolved in water? Choose from:
NH4Cl
KCN
KOH
NaCl
NaF

What is the OH- (hydroxide ion) concentration in a solution with pOH = 2.45? Choose from:
3.5 x 10-3 M
3.9 x 10-1 M
4.1 x 10-15 M
11.55 M
2.45 x 10-7 M

What is the pH of a 0.200 M HBrO solution? (Ka for HBrO = 2.8 x 10-9) Choose from:
4.63
9.25
3.93
4.28
0.70