The solubility of a compound in water is 6.8g/100ml at 25°C. Calculate the amount of water required to crystallise 10g of the compound. If the pure compound is collected at 25°C what is the maximum possible yield percent?

Your question isn't clear to me. The amount of water necessary to dissolve 10g of the compound is 100 x (10/6.8) = ? but that isn't what is needed to crystallize.

Well, well, well, looks like we have a little chemistry dilemma on our hands! Don't worry, I'm here to help.

To calculate the amount of water required to crystallize 10g of the compound, we can use a simple proportion. We know that the solubility is 6.8g per 100ml of water at 25°C. So, we can set up our proportion like this:

6.8g / 100ml = 10g / x

Cross-multiplying, we get: 6.8g * x = 100ml * 10g

Solving for x, we get: x = (100ml * 10g) / 6.8g

Doing the math, we find that approximately 147 ml of water would be required to crystallize 10g of the compound.

Now, let's move on to the maximum possible yield percent. Since we're collecting the pure compound, the maximum yield would be 100%. It means if you perfectly crystallize those 10g, you'll get a 100% yield. But, in reality, achieving a 100% yield is about as likely as finding a unicorn doing the Macarena on the moon. So, expect a lower percentage in practical situations.

Hope this helps, and remember, when life gives you chemicals, make compounds!

To calculate the amount of water required to crystallize 10g of the compound, we can set up a proportion using the given solubility:

Solubility of the compound = 6.8g/100ml

Let's assume x is the amount of water required to crystallize 10g of the compound in ml.

Using the proportion:

(6.8g / 100ml) = (10g / x)

Cross-multiplying, we get:

6.8g * x = 100ml * 10g

Simplifying, we find:

6.8x = 1000

Dividing both sides by 6.8, we get:

x = 147.06 ml

Therefore, the 10g of the compound would require approximately 147.06 ml of water to crystallize.

To calculate the maximum possible yield percentage, we need to know the actual yield of the experiment. However, if we assume the whole 10g of the compound is successfully collected, the maximum possible yield percentage can be calculated using the formula:

Maximum possible yield percentage = (Actual yield / Theoretical yield) * 100

Since we assume the whole 10g of the compound is collected, the actual yield would be 10g.

The theoretical yield can be calculated by multiplying the solubility of the compound at 25°C (6.8g/100ml) with the amount of water required to crystallize (147.06 ml):

Theoretical yield = (6.8g/100ml) * 147.06 ml

Calculating this, we find:

Theoretical yield = 9.999648 g

Now we can calculate the maximum possible yield percentage:

Maximum possible yield percentage = (10g / 9.999648g) * 100

Maximum possible yield percentage = 100.00352%

Therefore, if the whole 10g of the compound is collected, the maximum possible yield percentage would be approximately 100.00352%.

To calculate the amount of water required to crystallize 10g of the compound, we need to use the given information about the solubility of the compound.

The solubility of the compound is given as 6.8g/100ml at 25°C. This means that for every 100ml of water, 6.8g of the compound can dissolve.

To find the amount of water required to crystallize 10g of the compound, we can set up a proportion:

(6.8g / 100ml) = (10g / X ml)

Cross-multiplying, we get:

6.8g * X ml = 10g * 100ml

Simplifying the equation, we find:

6.8X = 1000

Dividing both sides by 6.8, we find:

X = 147.1 ml

Therefore, approximately 147.1 ml of water is required to crystallize 10g of the compound.

Now, let's calculate the maximum possible yield percentage.

The maximum possible yield percentage is calculated by dividing the actual yield of the compound by the theoretical yield (the amount calculated above) and multiplying by 100.

The theoretical yield is the maximum amount of product that can be obtained if all reactants are completely converted to the product, assuming ideal conditions.

In this case, the theoretical yield would be 10g of compound.

If the pure compound is collected at 25°C, it means that all of the compound has crystallized and has been collected. Therefore, the actual yield in this case is also 10g.

The maximum possible yield percentage can now be calculated:

Maximum Yield Percentage = (Actual Yield / Theoretical Yield) * 100

Maximum Yield Percentage = (10g / 10g) * 100

Maximum Yield Percentage = 100%

Therefore, the maximum possible yield percentage would be 100%.