Acids & Bases: The Equilibrium System of Water

Look at the pH scale in the guided notes. Which of the following best describes a H⁺ concentration of 10^-7?

• acid

• base

• neutral

What is the [H⁺] in a sample of seawater if the [OH^-] = 2.0 x 10^-6 M?

[H⁺][OH^-] = 1 x 10^-14

• 2.0 x 10^-20 M

• 5.0 x 10^-9 M

• 2.0 x 10^-8 M

• 2.0 x 10⁸ M

What is the [H⁺] in household ammonia if the [OH^-] = 1 x 10^-3 M?

• 1 x 10¹¹ M

• 1 x 10⁷ M

• 1 x 10^-5 M

• 1 x 10^-11 M

Since household ammonia has a [H⁺] = 1 x 10^-11, it would be considered a(n) ​ (a)   .

• base
• acid
• neutral