Question

A 1.149 g sample contains only vitamin C (C6H8O6) and sucralose (C12H19Cl3O8). When the sample is dissolved in water to a total volume of 41.1 mL, the osmotic pressure of the solution is 3.18 atm at 287 K. What is the mass percent of vitamin C and sucralose in the sample?

a) mass percent vitamin C:%?
b) mass percent sucralose:%?

Answer 1

To find the mass percent of vitamin C and sucralose in the sample, use the ideal gas law equation to calculate the moles of each compound and then divide by the total mass of the sample.

Step-by-step explanation:

To find the mass percent of vitamin C and sucralose in the sample, we need to calculate the amount of each compound in the solution. We can use the ideal gas law equation:

PV = nRT

where P is the osmotic pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin. Rearranging the equation, we have:

n = PV/RT

We can now calculate the moles of vitamin C and sucralose using the given data and the molar mass of each compound. The mass percent of each compound is then calculated by dividing the mass of the compound by the total mass of the sample and multiplying by 100.