The solubility of acetanilide is 18.5 g in 100 mL of methanol at 0 °C, and 59.2 g in 100 mL of methanol at 60 °C. What is the maximum percent recovery that can be achieved for the recrystallization of acetanilide from methanol?

I worked a similar problem (just different numbers) yesterday. Look at the chemistry posts to find it. I must leave now and can't do this but I'll be back this afternoon.

To calculate the maximum percent recovery for the recrystallization of acetanilide from methanol, we need to determine the maximum amount of acetanilide that can dissolve at the lower temperature (0 °C) and the actual amount dissolved at the higher temperature (60 °C).

1. Calculate the maximum amount of acetanilide that can dissolve at 0 °C:
- The solubility of acetanilide at 0 °C is given as 18.5 g in 100 mL of methanol.
- Let's assume we have 100 mL of methanol.
- Therefore, the maximum amount of acetanilide that can dissolve at 0 °C is 18.5 g.

2. Calculate the amount of acetanilide that dissolved at 60 °C:
- The solubility of acetanilide at 60 °C is given as 59.2 g in 100 mL of methanol.
- Let's assume again that we have 100 mL of methanol.
- Therefore, the amount of acetanilide that dissolved at 60 °C is 59.2 g.

3. Calculate the maximum percent recovery:
- The percent recovery is calculated by dividing the actual amount of dissolved acetanilide at the higher temperature by the maximum amount that can dissolve at the lower temperature, and then multiplying by 100.
- Percent Recovery = (Amount dissolved at 60 °C / Maximum solubility at 0 °C) x 100

Substituting the values we calculated earlier:
- Percent Recovery = (59.2 g / 18.5 g) x 100
- Percent Recovery ≈ 319.46 %

Therefore, the maximum percent recovery that can be achieved for the recrystallization of acetanilide from methanol is approximately 319.46%.