Kw and pKw , pH and pOH Question Grade 10 chemistry Tr Enock

What is the pH of a solution that has a [H⁺] of 2.5 x 10^-5 mol dm^-3

• 4.60

• 5.0

• 2.5

• 7

What is the pOH of a solution where the [OH-] is 7.3 x 10-2 M?

• -1.14
• 2.0
• 1.14
• 7.3

What is the [H⁺] if the pH is 4.0?

• 1.0 x 10^-10 mol dm-3

• 1.0 x 10^-4 mol dm-3

• 1.0 x 10^-14 mol dm-3

• 1.0 x 10^-7 mol dm-3

What is the pOH of a solution that has a pH of 2?

• 10
• 12
• 14
• 1

What is the [OH^-] if the pH is 4.9? : Kw= 1 x 10^-14 mol² dm^-6

• 7.94 x 10^-10 mol dm-3

• 1.0 x 10^-4 mol dm-3

• 7.94 x 10^-14 mol dm-3

• 4.9 x 10^-10 mol dm-3

The lower the pH, the greater the concentration of :

• OH-
• H+

The greater the pOH, the smaller the concentration of 

• OH-
• H+

What is the pH of a solution where the [H+] is 1.0 x 10^-11 mol dm^-3?

• 11

• 13

• 14

• 1

Which of the following is not a strong acid?

• nitric
• sulfuric
• perchloric
• hydrofluoric

What is the pH of a 0.15 mol dm^-3 solution of HClO₄?(assume strong acid)

• 0.82

• 13.18

• 0.15

• 1