4 (a) Total vapour pressure of solution ,P = ( PEtOH- PH2O) EtOH + PH2O
P = (0.08 - 0.03) [0.54/(0.54+5.55)] + 0.03 = 0.034 atm ( EtOH = mole fraction of ethanol = number of moles of ethanol/total number of moles of ethanol and water)
4(b) Total vapour pressure of solution ,P = ( Psucrose- PH2O) sucrose + PH2O
P = (0 - 0.03) [1.19/(1.19+17.77)] + 0.03 = 0.011 atm ( EtOH = mole fraction of sucrose=number of moles of sucrose/total number of moles of sucrose and water)
5. MgCl2 being a strong electolyte will completely ionize to form Mg2+ and 2Cl- ions. Thus, i=3
Using the equation Tb =iKbm where Kb is the ebulioscopic constant and m is the molarity.
Substituting the values, we get Tb =3*0.5120*(7.4/95.2) * (1000/110) =1.08
Thus, the boiling point of the solution is 100+1.08 = 101.08 degree celcius
Using the equation Tf=iKfm where Kf is the cryoscopic constant and m is the molarity.
Substituting the values, we get Tf =3*1.858*(7.4/95.2) * (1000/110) =3.93
Thus, the freezing point of the solution is 100-3.93 = 96.07 degree celcius
Using the equation,= iCRT =i(n/V)RT = {3 [(7.4/95.2)] *0.0821*298.15} / 0.11 = 51.40 atm = 52.08 bar
Thus, the osmotic pressure of the solution is 52.08 bar.
Determine the vapour pressure (in atm) of the following solutions: a. 25.0g of ethyl alcohol (C2H5OH) in 100.0g of...
t. Determine the vapour pressure (in atm) of the following solutions: a. 25.0g of ethyl alcohol (C2H5OH) in 100.0g of water at 25.0°C. Pvap (H20, 25°C) = 23.8 mmHg; Pvap (C2H5OH, 25°C) = 61.2 mmHg b. 410g of sucrose (C12H22011) and 320g water at 25°C. Pvap (H20, 25°C) = 23.8 mmHg
What is the vapor pressure for an aqueous sucrose (C12H22011) solution containing 34.2 g of sucrose and 180 g of water (H2O) at 25°C? Pº(H20) at 25°C 23.8 mm Hg Molar mass of 342 g/mol sucrose Molar mass of 18.0 g/mol water 23.8 mm Hg O 0.23 mm Hg 23.6 mm Hg 13.2 mmHg
In this experiment, you will determine and compare the quantity of heat energy released in three exothermic chemical reactions through application of Hess’s law. Reaction 1: NaOH(s) → Na+(aq) + OH-(aq) + x1 kJ Reaction 2: NaOH(s) + HCl(aq) → H2O(l) + Na+(aq) + OH-(aq) + x2 kJ Reaction 3: NaOH(aq) + HCl(aq) → H2O(l) + Na+(aq) + OH-(aq) + x3 kJ In order to accurately measure the heat released in each reaction, we will be using a calorimeter. As...
What is the coefficient of H.So, when the following equation is properly balanced with the smallest set of whole numbers? __Cas(PO4h + H2SO4 - Caso + HPO. A) 3 B) 8 C) 10 D) 11 2) What is the coefficient of H20 when the following equation is properly balanced with smallest set of whole numbers? ALC + H2O - AM(OH), + CHE A) 3 B) 4 C) 6 D) 12 E) 24 3) of the reactions below, which one is...