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3.1 Exactly 1 litre of solution contains 0.020 mole of Ba²+ ions and 0.0020 mole of Cu²+ ions. You wish to separate these ions by selective precipitation using the drop-wise addition of a solution of K2CrO4. Explain, by using a full calculation, which of the salts CuCrO, or BaCrO4 will precipitate first? Given: Kp (CuCrO4) = 3.6 × 10-6 and Kp (BaCrO4) = 1.2 × 10-10

3.1 Exactly 1 litre of solution contains 0.020 mole of Ba²+ ions and 0.0020 mole of Cu²+ ions. You wish to separate these ions by selective precipitation using the drop-wise addition of a solution of K2CrO4. Explain, by using a full calculation, which of the salts CuCrO, or BaCrO4 will precipitate first? Given: Kp (CuCrO4) = 3.6 × 10-6 and Kp (BaCrO4) = 1.2 × 10-10

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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3.1 Exactly 1 litre of solution contains 0.020 mole of Ba²+ ions and 0.0020 mole of Cu²+ ions. You wish to separate these ions by selective precipitation using the drop-wise addition of a solution of K2CrO4. Explain, by using a full calculation, which of the salts CuCr04 or BaCrO4 will precipitate first? Given: Ksp (CuCro4) = 3. 6 × 10-6 and Ksp (BaCrO4) = 1.2 × 10-10 3.2 A voltaic cell is set up at 25 °C and delivers 0.55 V. One half cell contains an acidified solution of hydrogen peroxide (H202), and the other half-cell is based on the following reaction: 105 (aq) + 6H30*(aq) + 5e →12 (aq) + 9H20 (f), Eed = 1.20 V 3.2.1 Write down the fully balanced cell-reaction equation. 3.2.2 [10]2 What must the ratio- [12] - be if [H2Oz] = 0.15 M and the pH = 0.60?
Transcribed Image Text:3.1 Exactly 1 litre of solution contains 0.020 mole of Ba²+ ions and 0.0020 mole of Cu²+ ions. You wish to separate these ions by selective precipitation using the drop-wise addition of a solution of K2CrO4. Explain, by using a full calculation, which of the salts CuCr04 or BaCrO4 will precipitate first? Given: Ksp (CuCro4) = 3. 6 × 10-6 and Ksp (BaCrO4) = 1.2 × 10-10 3.2 A voltaic cell is set up at 25 °C and delivers 0.55 V. One half cell contains an acidified solution of hydrogen peroxide (H202), and the other half-cell is based on the following reaction: 105 (aq) + 6H30*(aq) + 5e →12 (aq) + 9H20 (f), Eed = 1.20 V 3.2.1 Write down the fully balanced cell-reaction equation. 3.2.2 [10]2 What must the ratio- [12] - be if [H2Oz] = 0.15 M and the pH = 0.60?
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