WebFreezing point of a 4% aqueous solution of X is equal to freezing point of 12% aqueous solution of Y. If molecular weight of X is A, then molecular weight of Y is: A A B 3A C 4A D 2A Medium Solution Verified by Toppr Correct option is B) For the same freezing point, molality of both solutions should be the same. m x=m y 96×M x4×1000= 88×M y12×1000 WebThe freezing point of a 4% aqueous solution of pilocarpine nitrate is -0.56 °C. a. Is a 4% solution hypotonic, isotonic, or hypertonic? a hypertonic b. How many grams of pilocarpine nitrate (MW = 271.27) should be used in preparing 1000 mL of an isotonic solution? (Answer using numbers only. Do not include units in your answer.
13.9: Freezing Point Depression and Boiling Point Elevation
WebScience Chemistry You have an aqueous solution of NaCl that has a freezing point of -4.85°C. What mass (in grams) of NaCl must be added to 1000 g of this solution to lower the freezing point to -12.00°C? (Assume a van't Hoff factor of 1.9 for NaCl). (Kf for water is 1.86°C･kg/mol). WebView 1423 Exam 1 Review.pdf from BCH 369 at University of Texas. CHEM 1423 Exam 1 OOF Ch 13 Vapor Pressure, Boiling Point, Freezing Point - Boiling point: liquid à gas - Vapor pressure: amount of cgm iphone
Engineering of hydrogel electrolyte for aqueous Zn LiFePO4
WebApr 16, 2024 · Freezing point of a 4% aqueous solution of X is equal to freezing point of 12% aqueous solution Y. If molecular weight of X is A, then molecular weigh. asked … WebWhat is the molar mass of the solute? Kf = 1.86 °C/m 43.6 g/mol 175 g/mol 10.9 g/mol 278 g/mol. A 250. mL aqueous solution prepared by dissolving 55.0 g of a non-electrolyte … WebMay 25, 2024 · The plate was once again incubated covered and protected from light on a plate shaker at room temperature. After 10 min, 10 μL of KIO 4 solution (18.75 mg/mL KIO 4 in 470 mM aqueous KOH) was added to each well to oxidise and reveal the coloured product formed between formaldehyde and Purpald. The plate was incubated at room … cgm in turning red