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Chapter 12: Problem 33

Suggest three ways to increase the rate at which coarse salt dissolves in a pan of water.

Short Answer

Expert verified
Heat the water, stir the solution, and use finer salt particles.

Step by step solution

01

- Increase Temperature

Heating the water increases the kinetic energy of the water molecules, which causes them to move faster. This faster movement increases the interaction between water molecules and salt, thereby increasing the rate at which the coarse salt dissolves.
02

- Stir the Solution

Stirring the water helps distribute the salt particles throughout the water more evenly. This constant movement helps water molecules come into contact with the salt more frequently, increasing the rate of dissolution.
03

- Use Finer Salt

Using a finer grade of salt increases the surface area exposed to water. More surface area allows more water molecules to interact with the salt at any given time, speeding up the dissolution process.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Temperature Increase
Increasing the temperature of a solution is an effective way to speed up the dissolution process. When you heat the water, its molecules gain kinetic energy. This means the molecules move faster and collide with the salt particles more often. Faster and more frequent collisions break down the salt particles quicker, leading to a faster dissolution rate.
In essence, warmer water causes salt to dissolve faster because of the heightened molecular activity. If you need to dissolve coarse salt quickly, simply heating the water can significantly boost the efficiency of the process.
Stirring Solutions
Stirring the solution can also increase the rate at which salt dissolves. When you stir the water, you are helping to distribute the salt particles evenly throughout the water. This means that the salt is constantly in contact with fresh water, rather than becoming saturated by dissolved particles.
Stirring makes the water molecules come into contact with the salt more frequently. This continuous movement helps to disintegrate the salt faster. So, if you want to make your salt dissolve quickly in water, remember to stir continuously.
Particle Size and Surface Area
Using a finer grade of salt can tremendously increase the dissolution rate because it offers a larger surface area for the water molecules to interact with. When the surface area is larger, more water molecules can simultaneously work to dissolve the salt.
Course salt has a smaller surface area compared to finer salt granules. Hence, the finer the salt, the quicker it will dissolve. Crushing coarse salt into smaller pieces or using already finer salt can thus aid the dissolution process.

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