1. Based on your observation, what do you think affects the solubility of the powdered milk in the first activity?
2.Does the size of the salt (solute) affect how fast it dissolves in waterfsolvent)? Why? Why not?
3. Does the powdered chocolate in activity c dissolve faster in hot or in cold water?
Answers
hope this helps you
mark me brainlist please
1.Milk solids rapidly lose solubility if their moisture content ranges from approximately 15 to 38%. ... We believe that this beneficial effect of increased stirring rate can be related to a more rapid reduction of the solids concentration in the vicinity of the dissolving milk powder particles.
2.Yes ,It’d Definitely Affect The Rate/Speed It Dissolves.
There are many factors that can affect the rate of solubility such as temperature ,pressure and size of solute particle and even whether is it stirred. In this case ,we are looking at the size of solute particle.
So How does the size affect the rate of solubility / How fast it dissolves?
If the salt particle is large , It has a smaller surface area to volume ratio compared to fine salt grains ,which has a larger surface area to volume ratio.
With greater surface area to volume ratio, there can be more contact between particles of solute (salt) and solvent (water) and hence it will dissolve faster.
Lower surface area to volume ratio means lower rate of diffusion between particle.
This is adapted by the cells in our body as well. Have you ever wonder why cells are small? Cells are small to maximise nutrients and waste diffusing in and out of cell, and cells that are meant for absorbing have special adaptations such as Red Blood Cell and Root Hair cell.
This example can help you understand better
Imagine the salt particle is a 1cm square cube
1 x 1 x 6 = 6cm² (Surface Area)
1 x 1 x 1 = 1cm³ (Volume)
Surface Area : Volume Ratio
6 : 1
Now second scenario , a 2cm square cube
2 x 2 x 6 = 24cm² (Surface Area)
2 x 2 x 2 = 8cm³ (Volume)
Surface Area : Volume Ratio
3: 1
3.Hot water has more energy in it than cold water does. That means that the molecules in the water move faster. The molecules attack and break down the powder faster in hot water than cold.
hope this helps you
mark me brainlist please
1.Milk solids rapidly lose solubility if their moisture content ranges from approximately 15 to 38%. ... We believe that this beneficial effect of increased stirring rate can be related to a more rapid reduction of the solids concentration in the vicinity of the dissolving milk powder particles.
2.Yes ,It’d Definitely Affect The Rate/Speed It Dissolves.
There are many factors that can affect the rate of solubility such as temperature ,pressure and size of solute particle and even whether is it stirred. In this case ,we are looking at the size of solute particle.
So How does the size affect the rate of solubility / How fast it dissolves?
If the salt particle is large , It has a smaller surface area to volume ratio compared to fine salt grains ,which has a larger surface area to volume ratio.
With greater surface area to volume ratio, there can be more contact between particles of solute (salt) and solvent (water) and hence it will dissolve faster.
Lower surface area to volume ratio means lower rate of diffusion between particle.
This is adapted by the cells in our body as well. Have you ever wonder why cells are small? Cells are small to maximise nutrients and waste diffusing in and out of cell, and cells that are meant for absorbing have special adaptations such as Red Blood Cell and Root Hair cell.
This example can help you understand better
Imagine the salt particle is a 1cm square cube
1 x 1 x 6 = 6cm² (Surface Area)
1 x 1 x 1 = 1cm³ (Volume)
Surface Area : Volume Ratio
6 : 1
Now second scenario , a 2cm square cube
2 x 2 x 6 = 24cm² (Surface Area)
2 x 2 x 2 = 8cm³ (Volume)
Surface Area : Volume Ratio
3: 1
3.Hot water has more energy in it than cold water does. That means that the molecules in the water move faster. The molecules attack and break down the powder faster in hot water than cold.