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if 14.2 g of al(no3)3 is dissolved in 655g of water, what is the boiling point of the solution (assume 100% dissociation, kb (h2o)

Respuesta :

The boiling point of the solution is 100.208°C.

What is boiling point?

The boiling point is defined as elevation in temperature. It is a colligative property means which depends on the concentration of solute.

The temperature at which the pressure of a liquid exerted by its surroundings equals the pressure of the liquid's vapour is known as the boiling point.

At this temperature, the addition of heat causes the liquid to turn into its vapour without raising the temperature.

Molar mass of Al(NO[tex]_3[/tex])₃ = 212.996 g/mol

No. of moles = 14.2/212.996 g/mol

                      = 0.066 mol

Molarity = 0.066/655 × 1000

              = 0.1 M

i = 4 ⇒ ΔT = 0.52° × 0.1 × 4

ΔT = 0.208°

Final temperature = 100° + 0.208°

                              = 100.208°

               

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