Question

7. What can be done to make a solid solute dissolve faster in a liquid solvent?

Answer 1

See the explanation.

Step-by-step explanation:

We must change the frequency of the collisions so as to increase the solubility.

There can be various ways to dissolve it faster in a liquid solvent.

For example stirring could help.

Heating the solvent can help make it fast, so that particles collide more often.

If we are trying to dissolve some sugar in a glassful of tea. A packet of granulated sugar would dissolve faster than a cube of sugar. The rate of dissolving would be increased by stirring, or agitating the solution. Finally, the sugar would dissolve faster in hot tea than it would in cold tea.

Answer 2

Increase in temperature

More stirring

Increasing surface area of solvent

Step-by-step explanation:

Now firstly, we have to understand the definition of solubility. Solubility is the ability of a substance to dissolve in any other substance. The substance which get dissolve is called solute and substance which dissolve another substance in it is solvent.

Now why temperature increases solubility. Now we know there are inter molecular forces which combines the molecules together. When we provide heat to them, there vibration increases and inter molecular bond gets weak. It becomes easy for solvent with higher vibrations of molecules to dissolve solute because solute itself has lower inter molecular force at higher temperature. So, with higher number of free molecules, solute particles can mingle with solvent more easily.

Now for stirring, note that it simply displaces solvent molecules to make path for solute, hence make solute dissolve faster, but do not increase the quantity of solute which can be dissolved in solvent because stirring does not effect inter molecular forces.

Increase in surface area of allow greater number of molecules of solute to interact with solvent, hence increases the speed of dissolving.

Note that pressure increase will not effect the solubility of a solid in liquid. Because in solid or liquid, molecules are very much compressed already and pressure does not effect on large scale on inter molecular forces of both solute and solvent.