A solution contains 21.1 grams of NaCl in 0.721 kg water at 25 °C. What is...

A solution contains 21.1 grams of NaCl in 0.721 kg water at 25 °C. What is the vapor pressure of the solution?

Expert Solution

vapor pressure of solution = vapor pressure of solvent * mole fraction of solvent

Psolution = P⁰ * X solvent

no of moles of water ( n water) = 721/18 = 40.05moles

no of moles of NaCl ( n NaCl) = 21.1/58.5 = 0.36 moles

mole fraction of water (Xwater) = n water/n water + n NaCl

= 40.05/40.05 + 0.36

= 40.05/40.41 = 0.991

The vapor pressure of water at 25⁰C = 23.8 torr

Ps = P⁰* Xsolvent

= 23.8*0.991 = 23.586 torr >>>answer

queen_honey_blossom answered 2 years ago

A solution of brine (water containing NaCl) contains 230 kg/m3 at 293 K.

A solution of brine (water containing NaCl) contains 230 kg/m3 at 293 K. The density of the brine at this temperature is 1.148 g/cm3 . Calculate the following, a. composition in mass fractions b. composition in mole fractions c. volume % of water. Assume the density of water at this temperature is 0.998 g/cm3

For a solution that contains 0.0216 kg of a nonelectrolyte and 0.175 kg of water. The...

For a solution that contains 0.0216 kg of a nonelectrolyte and 0.175 kg of water. The solution froze at -7.18*C and Kf = 1.86*C/m. Is the nonelectrolyte CH3OH, CH3SH, or C2H5OH? Explain your reasoning.

A kilogram of solution contains following particles dissolved in water 3g of NaCl and 5g of...

A kilogram of solution contains following particles dissolved in water 3g of NaCl and 5g of CaCl calculate the osmolarity of the solution ( molecular weight NaCl 58.44g/mol and 110.98g/mol forCaCl).

A system contains a 0.1 molar solution of NaCl and a 0.01 M solution of NaCl...

A system contains a 0.1 molar solution of NaCl and a 0.01 M solution of NaCl separated by an oherise impermeable membrane hat contains a special sodium-conducting pore called an ionophore. The 0.1M solution is inside the membane and the 0.01 Molar solution is outsie the membrane. This ionophore allows free diffusion of the Na+ ions, but not Cl- ions. T=300K, R= 8.31 J/K/mol, F= 96500 J/mol/volt... a) what is the total chemical potential difference, that includes concentration dependent potential...

A cooler contains 1 kg of ice at -5°C. 2 kg of water at 50°C is...

A cooler contains 1 kg of ice at -5°C. 2 kg of water at 50°C is added to the cooler. If the cooler does not exchange any heat with the rest of the world, what is the final temperature of the ice and water?

Steam at 100 °C is bubbled into 2.70 kg of water at 25 °C in a...

Steam at 100 °C is bubbled into 2.70 kg of water at 25 °C in a calorimeter cup. How much steam will have been added when the water in the cup reaches 55 °C? (Ignore the effect of the cup.)

A tank contains 2340 L of pure water. A solution that contains 0.07 kg of sugar...

A tank contains 2340 L of pure water. A solution that contains 0.07 kg of sugar per liter enters a tank at the rate 9 L/min The solution is mixed and drains from the tank at the same rate. (a) How much sugar is in the tank initially? (kg) (b) Find the amount of sugar in the tank after ?t minutes. amount = (kg) (your answer should be a function of ?t) (c) Find the concentration of sugar in the solution...

A tank contains 2140 L of pure water. A solution that contains 0.01 kg of sugar...

A tank contains 2140 L of pure water. A solution that contains 0.01 kg of sugar per liter enters a tank at the rate 6 L/min. The solution is mixed and drains from the tank at the same rate. (a) How much sugar is in the tank initially? (b) Find the amount of sugar in the tank after t minutes. (c) Find the concentration of sugar (kg/L) in the solution in the tank after 51 minutes.

A tank contains 2800 L of pure water. A solution that contains 001 kg of sugar...

A tank contains 2800 L of pure water. A solution that contains 001 kg of sugar per liter enters a tank at the rate 9 L/min The solution is mixed and drains from the tank at the same rate. a) How much sugar is in the tank initially? b) Find the amount of sugar in the tank after t minutes. amount = (kg) (your answer should be a function of t) c) Find the concentration of sugar in the solution...

Determine the vapor pressure of a solution at 55°C that contains 34.2 g NaCl in 375...

Determine the vapor pressure of a solution at 55°C that contains 34.2 g NaCl in 375 mL of water. The vapor pressure of pure water at 55°C is 118.1 torr. The van't Hoff factor for NaCl is 1.9

Question