Question

Chapter7 20. Explain how to physically make the following solutions. In other words, write instructions for someone to prepare each of the following solutions. Show your calculations in determining amounts needed. Be sure to stay aware of what is possible to physically measure and what is not. 1 kg of a 12%(w/w) solution of NaCl in water a. 500 mL of a 16%(v/v) solution of propanol in water b. 350 mL of a 25%(w/v) solution of glucose in water c. 5.0 L of a 2.4 M solution of potassium nitrate d. 21. For the following three solutions (i, ii, and iii, rank them in order of. least to most solute particles (total) a. b. lowest to highest freezing point lowest to highest boiling point c. Explain your reasoning. i. 200 mL of 1.0 M NaCl (a strong electrolyte) ii. 50 mL of 0.4 M Ce(NOs)s (a strong electrolyte) iii. 50 mL of 3.0 MHNO: (a weak electrolyte)

Answer 1

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eight by velumeleight of solute x 1oo % : eight of Solute x100 height of Solute- x 3s。... 87-5 l0 0 d mo laity = no, of moles of solu 2.4 M = no-of mol, solute ho. of mous - used 12n必101-1032 g/mol 13, 384 - 13 k Add 13 of KNo to S5L water