How much table salt should be added to 300 g water to lower its freezing point to -2.00°C?Solution X containing 0.020 mol of iron(II) sulfate requires 22.5 mL of potassium manganate(VII) for a complete reaction. The equation for the reaction is: 5Fe2++ MnO4- + 8H+ → Mn2+ + 4H2O + 5Fe3+. What is the molarity of the KMnO4 solution?

given data : Kf of water = 1.86 °C/m Freezing point of water = 0°C ∆Tf = 0-(-2.00) = 2.00°C Mass…

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Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter13: Solutions And Their Behavior

Section: Chapter Questions

Problem 8PS

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How much table salt should be added to 300 g water to lower its freezing point to -2.00°C?
Solution X containing 0.020 mol of iron(II) sulfate requires 22.5 mL of potassium manganate(VII) for a complete reaction. The equation for the reaction is: 5Fe²⁺+ MnO₄^- + 8H⁺ → Mn²⁺ + 4H₂O + 5Fe³⁺. What is the molarity of the KMnO₄ solution?

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