Question

In: Chemistry

Assuming 100% dissociation, calculate the freezing point and boiling point of 2.27 m Na2SO4(aq). Constants may...

Assuming 100% dissociation, calculate the freezing point and boiling point of 2.27 m Na2SO4(aq). Constants may be found here.

Solutions

Expert Solution

Answer - We are given, molality of Na2SO4 = 2.27 m ,

We know, normal boiling point of water, H2O = 100.00 °C

Kb = 0.512 °C/m,  

The Van’t off factor i for Na2SO4 = 3

We know, ∆Tb = i*Kb*m

                         = 3*0.512 °C/m*2.27 m

                         = 3.49oC

boiling point of the solution = pure solvent boiling point +∆Tb

                                             = 100 + 3.49

                                             = 103.5oC

Now for freezing point

We know, Kf = 1.86 °C/m,  

Now we know,

ΔTf = i*Kf*m

ΔTf = 3*1.86oC/m * 2.27 m

        = 12.7 oC

So, freezing point of solution = Pure solvent freezing point - ΔTf

                                              = 0.00oC – 12.7oC

                                              = -12.7 oC


Related Solutions

Assuming 100% dissociation, calculate the freezing point and boiling point of 2.67 m Na2SO4(aq). Constants may...
Assuming 100% dissociation, calculate the freezing point and boiling point of 2.67 m Na2SO4(aq). Constants may be found here.
Assuming 100% dissociation, calculate the freezing point and boiling point of 2.79 m K3PO4(aq). Constants may...
Assuming 100% dissociation, calculate the freezing point and boiling point of 2.79 m K3PO4(aq). Constants may be found here. Solvent Formula Kf value* (
Assuming 100% dissociation, calculate the freezing point (TfTf) and boiling point (TbTb) of 1.39 m SnCl4(aq)1.39...
Assuming 100% dissociation, calculate the freezing point (TfTf) and boiling point (TbTb) of 1.39 m SnCl4(aq)1.39 m SnCl4(aq). Colligative constants can be found in the chempendix.
Assuming 100% dissociation, calculate the freezing point ( ?f ) and boiling point ( ?b )...
Assuming 100% dissociation, calculate the freezing point ( ?f ) and boiling point ( ?b ) of 2.84 ? K3PO4(aq) . Colligative constants can be found in the chempendix. ?f= ∘C ?b= ∘C help please
Assuming 100% dissociation, calculate the freezing point and boiling point of 0.550 mol of K3PO4 in...
Assuming 100% dissociation, calculate the freezing point and boiling point of 0.550 mol of K3PO4 in 1.00 kg of water. A) freezing point: Answer in Celsius B) boiling point: Answer in Celsius
I have 2 questions: Assuming 100% dissociation, calculate the freezing point and boiling point of 2.73...
I have 2 questions: Assuming 100% dissociation, calculate the freezing point and boiling point of 2.73 m K3PO4(aq). Constants may be found here. T(f)= T(b)= A solution is made by dissolving 0.558 mol of nonelectrolyte solute in 793 g of benzene. Calculate the freezing point, Tf, and boiling point, Tb, of the solution. Constants may be found here. T(f)= T(b)=
Calculate the freezing point and boiling point in each solution,assuming complete dissociation of the solute....
Calculate the freezing point and boiling point in each solution, assuming complete dissociation of the solute. A. Calculate the freezing point of a solution containing 10.7 g FeCl3 in 164 g water. B. Calculate the boiling point of the solution above C. Calculate the freezing point of a solution containing 3.7 % KCl by mass (in water). D. Calculate the boiling point of the solution above.  
Calculate the freezing point and boiling point in each solution, assuming complete dissociation of the solute....
Calculate the freezing point and boiling point in each solution, assuming complete dissociation of the solute. 1) Calculate the freezing point of a solution containing 10.6 g FeCl3 in 151 g water. 2) Calculate the boiling point of a solution above. 3) Calculate the freezing point of a solution containing 6.2% KCl by mass (in water). Express your answer using two significant figures. 4) Calculate the boiling point of a solution above 5) Calculate the freezing point of a solution...
Calculate the freezing point and boiling point in each solution, assuming complete dissociation of the solute....
Calculate the freezing point and boiling point in each solution, assuming complete dissociation of the solute. a.Calculate the freezing point of a solution containing 13.0 g FeCl3 in 164 g water. b.Calculate the boiling point of a solution above. c.Calculate the freezing point of a solution containing 3.9 % KCl by mass (in water). Express your answer using two significant figures. d.Calculate the boiling point of a solution above. e.Calculate the freezing point of a solution containing 0.162 m MgF2....
Calculate the freezing point and boiling point of each aqueous solution, assuming complete dissociation of the...
Calculate the freezing point and boiling point of each aqueous solution, assuming complete dissociation of the solute. A.) Calculate the freezing point of the solution containing 0.114 m K2S. B.) Calculate the boiling point of the solution above. C.) Calculate the freezing point of the solution containing 22.1 g of CuCl2 in 459 g water. D.) Calculate the boiling point of the solution above. E.) Calculate the freezing point of the solution containing 5.6 % NaNO3 by mass (in water)....
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT