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What are three ways to increase the rate of dissolving of 30 g of a large chunk of salt (#NaCl#) into 250 mL of 20 degrees Celsius of #H_2O#?

Answer 1

You could crush or grind it into smaller pieces, stir the solution, or increase the temperature of the solution.

The surface area of the salt that is exposed to the water molecules increases when it is crushed or ground.

Stirring accelerates the rate at which the salt granules and water molecules come into contact.

The rate at which the salt particles and water molecules come into contact is likewise accelerated by heating the solution.

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Answer 2

Caleb Adams

Increase temperature.
Stir the solution.
Crush the salt into smaller particles.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.