Which of the following is a characteristic of a true solution?
The solute particles are evenly distributed in the solution.
In a true solution the solute breaks down to the level of individual molecules or ions and mixes uniformly with the solvent. The particles are so small that they cannot be seen, cannot be filtered out, and do not settle on standing. As a result the composition is the same throughout the mixture.
A true solution does not scatter a beam of light (the Tyndall effect is seen only in colloids), so the Tyndall claim is wrong. The particles are much smaller than filter-paper pores, so filtration cannot separate them. They are also far below the limit of visibility of the naked eye. What is left as the actual defining feature is the uniform, even distribution of solute throughout the solvent.
Hence, the answer is The solute particles are evenly distributed in the solution.
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Important Questions from Solutions
What will happen to the boiling point of water when a little common salt is added to water and then heated?
Which Statement is correct ?
The pH value of 1 × 10 -8 (M) HCl is:
Tyndall effect is not observed in:
A non-volatile solute, urea ($CO(NH_2)_2$, molar mass $60 \ g/mol$), is dissolved in $180 \ g$ of water ($H_2O$, molar mass $18 \ g/mol$). If the vapor pressure of pure water at a certain temperature is $50 \ mmHg$, what is the vapor pressure of the solution when $18 \ g$ of urea is added?
