Question

What is the pH of a 2.6 × 10^-8 MH⁺ ion solution? (log 2.6 = 0.4150)

Options

• 7.6

• 6.5

• 10.6

• 8.4

Answer 1

7.6

Explanation:

Given, H⁺ ion concentration = 2.6 × 10^-8 M

Using formula,

pH = - log₁₀ [H⁺]

= - log₁₀ [2.6 × 10^-8]  = 7.58 ≈ 7.6