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Unformatted text preview: patino (mp25752) Post-lab 4 Lyon (53385) 1 This print-out should have 5 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 4.0 points Calculate the amount of KHP in grams that is required to completely neutralize 18.95 ml of 0.840 M potassium hydroxide. Correct answer: 3 . 25082. Explanation: moles KHP = moles KOH grams KHP MW KHP = M KOH V KOH grams KHP = M KOH V KOH MW KHP grams KHP = 3 . 25082 grams Your answer is limited to three significant digits (3.25 grams) by the concentration of KOH. 002 4.0 points Calculate the volume of 1.24 M sulfuric acid in milliliters that is required to completely neutralize 40.00 ml of 1.60 M sodium hydrox- ide. Correct answer: 25 . 8065 mL. Explanation: moles H + = moles OH- moles H + = 2 moles H 2 SO 4 moles OH- = moles NaOH M H 2 SO 4 V H 2 SO 4 2 = M NaOH V NaOH V H 2 SO 4 = M NaOH V NaOH M H 2 SO 4 2 V H 2 SO 4 = 25 . 8065 mL ....
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This note was uploaded on 10/21/2009 for the course CH 53395 taught by Professor Lyon during the Spring '09 term at University of Texas at Austin.
- Spring '09