Question

You have 20g of NaOH salt that you would like to quickly dissolve in water. Which ofthe options below will NOT help the NaOH to dissolve faster?A.) raising the temperatureB.) grinding up the NaOH salt before placing it in the waterC.) using large chunks of NaOH.D.) stirring the mixture

Answer 1

We need to dissolve 20g of NaOH in water, but quickly.

We explain the factors that help you to dissolve first.

1) Temperature: a solute dissolves faster in a hot cup of water than in a cool one, because particles have more energy of movement.

2) Stirring: it helps the solute particles throughout the solvent.

3) Particle size: smaller particles, increase their surface area. With a greater surface area, we can have more contact with the particles between the solute and the solvent.

So, the option that won't help to dissolve: B).

Answer: B.) grinding up the NaOH salt before placing it in the water