SPHS Acids and Bases

pH

100

What is the pH of a 1.0 x 10^-4 M nitric acid (HNO₃) solution?

pH = -log(1.0 x 10^-4 M) = 4.0

200

What is the pH of a 5.7 x 10^-7 M hydrochloric acid (HCl) solution?

pH = -log(5.7 x 10^-7 M) = 6.2

300

What is the pH of a 0.00000900 M sulfuric acid (H₂SO₄) solution?

pH = -log(0.00000900 M x 2) = 4.74

400

What is the pH of a 8.14 x 10^-6 M sodium hydroxide (NaOH) solution?

pOH = -log(8.14 x 10^-6 M) = 5.089375595

pH = 14 - 5.089375595 = 8.91

500

What is the pH of a 0.000045 M calcium hydroxide (Ca(OH)₂) solution?

pOH = -log(0.000045M x 2) = 4.045757491

pH = 14 - 4.045757491 = 1.0 x 10¹

pOH

100

What is the pOH of a 0.0004 M lithium hydroxide (LiOH) solution?

pOH = -log(0.0004 M) = 3

200

What is the pOH of a 6.29 x 10^-9 M potassium hydroxide (KOH) solution?

pOH = -log(6.29 x 10^-9 M) = 8.20

300

What is the pOH of a 0.000347 M strontium hydroxide (Sr(OH)₂) solution?

pOH = -log(0.000347 M x 2) = 3.16

400

What is the pOH of a 7.2 x 10^-5 M acetic acid (CH₃COOH) solution?

pH = -log(7.2 x 10^-5 M) = 4.142667504

pOH = 14 - 4.142667504 = 9.9

500

What is the pOH of a 3.1 x 10^-7 M ammonia (NH₃) solution?

pOH = -log(3.1 x 10^-7) = 6.5