The solubility of a compound in water is 6.8g/100ml at 0.33g/100ml at 25 degree celsius. Calculate the amount of water required to crystallise 10g of the compound. If the pure compound is collected at 25 degree celsius, what is the maximum possible yield percent?

you post need work. The first sentence lists two solubilities.

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To calculate the amount of water required to crystallize 10g of the compound, we need to determine the maximum amount of compound that can dissolve in 100ml of water.

Given:
Solubility of the compound in water at 25°C: 0.33g/100ml

To determine the amount of compound that can dissolve in 1ml, we divide the given solubility by 100:
0.33g/100ml / 100 = 0.0033g/ml

Now we can calculate the amount of water required to dissolve 10g of the compound:
10g / 0.0033g/ml = 3030.3 ml

Therefore, approximately 3030.3 ml of water is required to crystallize 10g of the compound.

To calculate the maximum possible yield percentage, we need to compare the amount of compound we obtained to the amount we initially started with.

Given:
Amount of compound obtained: 10g
Amount of water used for crystallization: 3030.3 ml

To determine the maximum possible yield percentage, we need to calculate the ratio between the amount of compound obtained and the amount that could have been obtained if the solubility limit wasn't reached.

The maximum possible amount of compound that could have been obtained is the amount that can dissolve in the 3030.3 ml of water used for crystallization at 25°C, which is given as 0.33g/100ml.

Calculate the maximum possible amount of compound that could have been obtained:
0.33g/100ml x 3030.3 ml = 10.00 g

Now we can calculate the maximum possible yield percentage:
(maximum amount obtained / initial amount) x 100
(10g / 10g) x 100 = 100%

Therefore, the maximum possible yield percentage is 100%.

To calculate the amount of water required to crystallize 10g of the compound, we first need to determine the solubility of the compound in water at the given temperature.

Given that the solubility of the compound is 6.8g/100ml at 0.33g/100ml at 25 degrees Celsius, we can use this information to determine the solubility of the compound in water at other concentrations.

The solubility can be expressed as a ratio:
solubility = mass of solute (compound) / volume of solvent (water)

Using this ratio, we can set up a proportion:
6.8g / 100ml = 0.33g / x ml

To find the amount of water required to crystallize 10g of the compound, we need to solve for x:
x = (0.33g * 100ml) / 6.8g

Now, let's calculate:
x = 4.85 ml

Therefore, approximately 4.85 ml of water is required to crystallize 10g of the compound.

To calculate the maximum possible yield percentage, we need to consider the solubility limits. The compound is fully soluble up to 6.8g/100ml, but we are using only 4.85 ml of water.

The maximum amount of the compound that can dissolve in 4.85 ml of water is:
(6.8g/100ml) * (4.85ml) = 0.33g

Since 10g of the compound was used, and only 0.33g can dissolve in the given amount of water, the maximum possible yield is 0.33g.

The maximum possible yield percentage can be calculated as:
(yield / theoretical yield) * 100

For this case, the maximum possible yield percentage is:
(0.33g / 10g) * 100 = 3.3%

Therefore, the maximum possible yield percentage of the pure compound collected at 25 degrees Celsius is 3.3%.