experiment: colligative properties Water cannot be used as the solvent for this
ID: 487531 • Letter: E
Question
experiment: colligative properties
Water cannot be used as the solvent for this experiment. For what types of molecular substances - give specific examples - could water be used as a suitable solvent to determine a molecular weight?
Can water be used to determine the formula weights of all ionic compounds? What are the limitations, if any?
Why does the slope of the mixed solution continue to decrease rather than reaching a plateau like that observed for the pure liquid? Hint: When the solution freezes the solid is pure solvent.
Explanation / Answer
Only molecular substance will this work
for ionic species, the vant hoff coefficient must be determiend experimentally, therefore, it is not suitable, since this depends on the concentration of the ions in solution
Can water be used to determine the formula weights of all ionic compounds? What are the limitations, if any?
Not likely, since "i" can't be stated
Why does the slope of the mixed solution continue to decrease rather than reaching a plateau like that observed for the pure liquid? Hint: When the solution freezes the solid is pure solvent.
The slope will decrease due to to the presence of ions, which form colligative properties of point dpression due to solute/solvent interactions
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