Author Question: A 2.61-gram sample of a compound is dissolved in enough water to form 100.0 mL of solution. This ... (Read 78 times)

iveyjurea · **on:** Mar 21, 2021

Question 1

A 0.20 M solution of MgSO₄ has an observed osmotic pressure of 7.6 atm at 25°C. Determine the observed van 't Hoff factor for this experiment.

◦ 19
◦ 0.31
◦ 1.6
◦ 1.8
◦ 2.0

Question 2

A 2.61-gram sample of a compound is dissolved in enough water to form 100.0 mL of solution. This solution has an osmotic pressure of 25.0 torr at 25°C. If it is assumed that each molecule of the solute dissociates into two particles (in this solvent), what is the molar mass of this solute?

◦ 5.11 × 10¹ g/mol
◦ 3.26 × 10³ g/mol
◦ 1.94 × 10³ g/mol
◦ 3.88 × 10⁴ g/mol
◦ none of these are correct

akpaschal · **Reply #1 on:** Mar 21, 2021

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