(Answered) 1 calculate the hydronium concentration when the hydroxide

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1. Calculate the hydronium concentration when the hydroxide concentration is 1 x 10^-5M.

2. If the hydronium ion concentration is 1 x 10^-3,M, what is the pH?

3. If a solution has a pH of 2, what is the hydroxide concentration?

4. What is the pH of a 0.0001 M hydrochloric acid solution?

5. What is the pH of a 0.0001 M sodium hydroxide solution?

6. Hydrogen sulfide, H₂S, burns in the presence of oxygen, O₂, to form sulfur dioxide, SO₂, and water, H₂O. Is the sulfur oxidized or reduced in this reaction?

7. In balancing oxidation-reduction reactions, not only must there be a mass balance (the same number of like atoms on each side of the equation), but also a charge balance (the same number of total charges on each side of the equation). With this in mind, balance the following:

Sn²⁺ + Ag → Sn + Ag⁺

8. Given the reaction

Fe³⁺+ I^1- → Fe²⁺ + I₂

a. Balance the equation

b. Which element is being oxidized?

c. Which element is the reducing agent?

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