Question

19. The concentration of O2 in the blood is 1.0 x 10-2 m to 37C (temperature of Henry's constant of O2 is 1.8 x 10-3 m/atm. What is the apparent O2 pressure in contact with blood? 20. The concentration of commercial HCI (36.46g/mol) is 36.0% per mass, express this concentration in molality and molar fraction.

Need the answers of these two

Answer 1

(19) Given concentration of O2 (s) = 1x102m Henry's constant RH = 1-8 x16 3 matm we know that, from Henry's laco S=KHP atm 1x102= 1.8*10-3 m xp P= 5.55 atm Apparent pressure of O2 = 5-55 atm Ang concentration of HCl = 36.10 per mass. contain which means 100 g of solution 36 g of HCl. Mass of water= (100-36 g = 64 g Molality - no. of mole of Hol Volume of solvent ve water (kg)

weight of Hol molar mass of 4C) Volume of water (kg) 36g 36.46 9/mol 64 Tooo kg Molality = 15.428 m Mote fraction of Hei = noof mole of Hel no. of mole No. of mole of hes of H2O - 36 1/36.469/mol 369 + 64g 36.4 9 1 mol 18 g/mol mole fraction = 0.217 of H2O= 1- xHa = - 0.217 = 0.783 Ang