How would the freezing point of seawater compare with that of pure water? a)higher b) lower c) the same d) ten times higher

Respuesta :

The answer would be B) Lower, because pure water freezes at 32 degrees Fahrenheit whereas salt water freezes at 28.4 degrees Fahrenheit. Hopefully this helps!

Answer:

Freezing point of seawater is lower as compared to pure water

Explanation:

Seawater contains salts like [tex]MgCl_{2}[/tex], NaCl etc.

According to colligative properties of molecules, presence of solute in a pure solvent lowers freezing point of pure solvent obeying the following equation-

                                        [tex]\Delta T_{f}=k_{f}.m[/tex]

where [tex]\Delta T_{f}[/tex] is lowering of freezing point, [tex]k_{f}[/tex] if cryogenoscopic constant of solvent and m is molality of solution.

In seawater, water is the solvent and [tex]MgCl_{2}[/tex], NaCl etc are solutes.

Hece freezing point of seawater is lower than pure water