ocean water typically contains approximately 3.5g of mostly NaCl per 100.0 mL of
ID: 1050124 • Letter: O
Question
ocean water typically contains approximately 3.5g of mostly NaCl per 100.0 mL of solution and has an approximate density of 1.03g/mL. the molar mass of water and sodium chloride are 18.0g and 58.5 g; the density of pure water is 1.00g/mL the universal gas constant R is 0.0821 L-atm/ mol-K. calculate the molarity of this solution Part 2 26. Ocean water typically contains approximately 3.5 g of mostly NaCI per 100.0 ml of solution and has an approximate density of 1.03 g/mL. Note: the molar masses of water and sodium chloride are 18.0 g and 58.5 g: the density of pure water is 1.00 g/mL; the universal gas constant R is 0.0821 L-atm/mol-K. a. Calculate the molarity of this solution. 1000ml . d: 1.0 0.059 o.0175 58.5 1 9 b. Calculate the molality of this solution. o 0195 3.YI looe K .01 7S- c. Calculate the mole fractions of sodium chloride and water in this solution 3 1// % d. Calculate the vapor pressure of this solution if the vapor pressure of pure water at 25 °C is 0.0313 atm. 21.065., e. Calculate the osmotic pressure of this solution. The van't Hoff factor is approximately 1.95.Explanation / Answer
Molarity = (weight of NaCl / Molar mass of Nacl) x (1000 / volume in mL)
= (3.5 g / 58.5 g/mol) x (1000 / 100 mL)
= 0.6 M
Molarity of this solution = 0.6 M
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