Super Tic Tac Toe

Chem

100

What is the pH of a solution with a [H₃O⁺] of 1.0 x 10^-11. Is this solution acidic or basic?

11.00

Basic

200

Write the K_a or K_b expressions for the weak acid or weak base dissociation below.

HNO₂(aq) + H₂O(l) ⇄ H₃O⁺(aq) + NO₂^-(aq)

K_a = [H₃O⁺][NO₂^-] / [HNO₂]

300

Name this acid. 

H₃PO₄

Phosphoric acid

400

Calculate the [H₃O⁺] of a solution that has a pH of 7.9.

1 x 10^-8

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100

Calculate the [H₃O⁺] of a solution that has a pH of 12.5.

3 x 10^-13

200

Name this acid.

H₂SO₃

Sulfurous acid

300

Identify the Bronsted-Lowry acid and base in the reactants. Then identify the conjugate acid-base pairs.

HOCl + NH₃ → NH₄⁺ + ClO^-

HOCl is the acid

NH₃ is the base

NH₄⁺ is the conjugate acid

ClO^- is the conjugate base

400

What is the pH of a solution with a [H₃O⁺] of 5.5 x 10^-7. Is this solution acidic or basic?

6.26

Acidic

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100

What is the pH of a solution that has a [H₃O⁺] of 4.5 x 10^-8. Is this solution acidic or basic?

7.35

Basic

200

Calculate the [H₃O⁺] of a solution that has a pH of 2.23.

5.9 x 10^-3

300

What is the [H₃O⁺] of a solution if [OH^-] is 5.0 x 10^-8 M?

2.0 x 10^-7

400

What is the pH of a solution with a [H₃O⁺] of 4.79 x 10^-10. Is this solution acidic or basic?

9.320

Basic