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q3s07 - Version 001 Quiz 3 David Laude(53015 This print-out...

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Version 001 – Quiz 3 – David Laude (53015) 1 This print-out should have 8 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. V1:1, V2:1, V3:1, V4:1, V5:2. Please make sure you write your version numbers on your scantron. Good luck! Ammonia pH 23:08, general, multiple choice, > 1 min, fixed. 001 (part 1 of 1) 5 points What is the pH of 0.3 M ammonia if the K a for its conjugate acid, ammonium chloride, is 5 . 55 × 10 - 10 ? 1. 11.4 correct 2. 4.3 3. 8.7 4. 0.002 5. 2.6 Explanation: Molar Solubility 25:01, general, multiple choice, > 1 min, fixed. 002 (part 1 of 1) 5 points What is the molar solubility of Al(OH) 3 ? The K sp of Al(OH) 3 is 1 . 0 × 10 - 33 . 1. 2 . 5 × 10 - 9 correct 2. 5 . 6 × 10 - 9 3. 4 . 8 × 10 - 12 4. 1 . 6 × 10 - 9 5. 3 . 7 × 10 - 9 Explanation: Solub Comparison 25:01, general, multiple choice, > 1 min, fixed. 003 (part 1 of 1) 5 points Rank the following compounds from most soluble to least soluble. Assume that all bonds except the OH are ionic. (You can estimate this ranking without using a calculator.) Compound K sp Bi 2 S
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