The solubility of a substance can be expressed qualitatively and quantitatively. Use examples to explain this statement for sugar dissolved in water. help! Haha!
So what do you need help with? Do you think you can measure the amount of sugar that dissolves in water? Do you think you could find molecules that don't dissolve in water and compare their structures with molecules that dissolve in water?
Certainly! The solubility of a substance, such as sugar, can be expressed both qualitatively and quantitatively. Let's take a look at each one and how they apply to sugar dissolved in water.
1. Qualitative expression: Qualitatively, solubility can be described in terms of whether a substance dissolves or not, and how well it dissolves. For example, we can say that sugar is soluble in water, meaning it dissolves in water. This indicates that when sugar is added to water, it can easily mix and form a homogenous solution.
2. Quantitative expression: Quantitatively, solubility is represented by the amount of substance that can dissolve in a given amount of solvent at a particular temperature. For sugar dissolved in water, we can express its solubility as "x grams of sugar dissolves in 100 mL of water at 25°C." This means that at the specified temperature, a certain amount (x grams) of sugar can dissolve in 100 mL of water.
To further illustrate, let's consider a specific example:
Qualitatively: When you add a spoonful of sugar to a glass of water, you will observe that the sugar dissolves completely, resulting in a clear solution. This indicates that sugar is qualitatively soluble in water.
Quantitatively: Let's say that at 25°C, 200 grams of sugar can dissolve in 100 mL of water. This means that the solubility of sugar in water at 25°C is 200 grams per 100 mL.
In summary, the qualitative expression of sugar's solubility in water would state that it dissolves well in water, while the quantitative expression would provide specific information on how much sugar can dissolve in a given amount of water at a particular temperature.
Sure! The solubility of a substance refers to its ability to dissolve in a solvent to form a homogeneous mixture. In the case of sugar dissolved in water, we can express its solubility qualitatively and quantitatively.
Qualitative expression of solubility:
Qualitative expressions describe the solubility in general terms such as "soluble" or "insoluble." In the case of sugar and water, we can say that sugar is soluble in water because it readily dissolves to form a clear and homogeneous solution. This qualitative expression indicates that sugar can easily dissolve in water.
Quantitative expression of solubility:
Quantitative expressions provide specific numerical values to represent the solubility. In the case of sugar dissolved in water, we can measure the amount of sugar that can dissolve in a given amount of water at a specific temperature.
To quantitatively express the solubility of sugar in water, we can use terms like grams per liter (g/L). For example, if we know that at a specific temperature, 200 grams of sugar can dissolve in one liter of water, we can say that the solubility of sugar in water is 200 g/L.
To determine the quantitative solubility of sugar in water, you can perform an experiment. Here's a simple procedure you can follow:
1. Take a known amount of water (e.g., 200 mL) and place it in a clean container.
2. Gradually add sugar to the water while stirring continuously until no more sugar can dissolve. This point is called saturation.
3. Measure the mass of sugar that remains undissolved.
4. Calculate the mass of sugar that has dissolved by subtracting the undissolved mass from the total amount of sugar added.
5. Convert the mass of dissolved sugar to grams per liter (g/L) by dividing it by the volume of water used in liters.
For example, if you used 200 mL of water (0.2 L) and dissolved 40 grams of sugar, the solubility would be 40 g / 0.2 L = 200 g/L.
By following this procedure, you can determine the quantitative solubility of sugar in water. Remember that the solubility of a substance can also depend on temperature, so it may be different at various temperatures.