Question

Ascorbic acid, vitamin C, is a water-soluble vitamin. A solution that contains 80.5g ascorbic acid, C6H806 dissolved in 210g of water has a density of 1.22g/mL at 55C. With this information, answer the exercises of the 15-18. calculate % per mass of ascorbic acid, vitamin C calculate the molar fraction of ascorbic acid, vitamin C calculate the molality of ascorbic acid, vitamin C Calculate the molarity of ascorbic acid, vitamin C

Answer 1

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mass of Vitamin C = 80.5 m mass of H20 = 210 gm density = 1.22gmimi mass of solution = 290.5 gm cerī d = m or v=m % of Vitamin C = mass of Vitamin C X100 mass of solution E = 80.54m xloo 227.71% 290.5gm mole of vitamin c = 80. 5gm -0.457 mol 176gmimos mole of 420= 210gm 2 18 gm/mol 11.67 mole toral mole = 11067 +0.457 = 12.127 mole, mole fraction of vitc ._ 0.457 mole = 0.0381 12.127 mol melality = mole of Vito m mass of solvent (inkg = 0.457 moi 210x10 3 kg - m > 12:18 mol/kg molarity (M) = mole of vite = Post Volume (in 4) I V = mass density 290.59m = 238:11 mi = 238'11x10°C 1-22 gm/me = 1.92m M = 0.457 mol 238.11 X1032 cs Scanned with CamScanner