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# Postlab4 - patino(mp25752 Post-lab 4 Lyon(53385 This...

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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 . Your final answer is limited to three signifi- cant digits (25.8 mL) by the concentrations of H 2 SO 4 and NaOH.

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Postlab4 - patino(mp25752 Post-lab 4 Lyon(53385 This...

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