Ascorbic acid (vitamin C, C₆H₈O₆) is a water-soluble vitamin. A solution containing 80.5 g of ascorbic acid dissolved in 210 g of water has a density of 1.22 g/mL at 55 °C. Calculate (c) the molality,

Video transcript

Hi everyone here, we have a question telling us that thiamine is one of the water soluble vitamins. And our goal is to calculate the morality of an Aquarius solution containing 56.9 g of timing and 345 g of water. The solution has a density of 1.4 g per milliliter at 25 degrees Celsius. So first we're going to calculate our molds of thiamine. So the molar mass of time, I mean Equals 265. g per mole. So our moles Equals 56. g. I I mean times one mole Over 265.4 g of timing, Which equals 0.214 moles. And now we have 345 grams of water. And we need to change that into kilograms because morality is most per kilogram. So we're gonna multiply it by one kg Over 1000 g. So our g are going to cancel out here and that is going to equal 0.345 kg. And now we need to finally calculate the morality. So our morality is going to equal 0.214 moles of timing over 0. kg of water. And that equals 0.6 - zero morality. And that is our final answer. Thank you for watching. Bye