1. Which of these is not used to classify a dispersion system?
- Colloid system (colloids) DP= 1-1000 nm (eg. macromolecules, nanoparticles)
- Stable system DP>1000 nm (eg. solids)
- Analytic dispersion system (true solutions) DP
- Coarse dispersion system DP>1000 nm (eg. suspensions, emulsions)
1 of 19
Other questions in this quiz
2. Which of these statements about equilibrium constant is not true?
- if K>1 products prevails reactants (if K is very high then it maybe irreversible
- Kc = [C}^c[D]^d divided by [A]^a[B]^b
- if K>1 Reactants prevails products (if K is very low reaction may not occur)
- Kc is dimensionless
3. Calculate osmatic pressure=RTc. Which is incorrect?
- c= osmolality
- R- gas constant
- C= osmolarity
- osmatic pressure= 1000RTc (Pa)
4. what is a colligative property of solutions definitions?
- They are observed in diluted solution so its possible to stop interactions with particles which depend on chemical structure.
- All of the above
- It is the properties of the solutions that depend on the number of particles in a given volumn of solvent but not in chemical properties of the solvent
5. What does the increasing ionic strenght mean?
- This decreases the activity coefficient and increases the difference between activity and conc (a
- This decreases the activity coefficient and decreases the difference between activity and conc (a
- This increases the activity coefficient and increases the difference between activity and conc (a