Chem Unit8

pH

• -log[H+]

• 14-pOH

• -log[OH-]

• >7 for basic solutions

• >7 for acidic solutions

pOH

• -log[H+]

• 14-pH

• -log[OH-]

• <7 for basic solutions

• <7 for acidic solutions

pKw

• 1*10^-14 at 25 deg C

• [H+][OH-]

• >1*10^-14 @ 50 deg C

• <1*10^-14 @ 50 deg C

pKw

• 14 at 25 deg C

• -logKw

• pOH + pH

• pOH/pH

• pH/pOH

pH of 0.1 M NaOH

• 1

• 13

• 8

• 4

pOH of 10^-3 M HCl

• 3

• 11

• 13

• 4

pH of 0.00345 M Sr(OH)2

• 0.00345

• 2.16

• 11.34

• 0.0069

Which has the lower pH, 0.0010 M KOH, or 0.0010 M Ca(OH)2?

• 0.0010 M KOH

• 0.0010 M Ca(OH)2

which aqueous solution is a strong electrolyte?

• H2CO3

• HClO2

• HNO3

• NH3

• KOH

pH of 0.005M HCl

• pH = 14 - (- log 0.005)

• pH = log - 0.005

• pH = - log 0.005

• pOH = -log 0.005