Calculate the hydronium ion

Question

1. 3.10 g of HI(g) is dissolved in water to make a 450 mL solution. Calculate the hydronium ion

concentration and the pH of the solution.

2. 540 mg of solid potassium hydroxide is dissolved in water to make a 700 mL solution. Calculate the pOH of the solution.

3. Calculate the mass of solid barium hydroxide required to make a 80 mL solution with a pOH of 2.65

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