Calculate the amount of depression that will occur when 5 g of sodium chloride is dissolved into 0.250 kg of water. remember when sodium chloride dissolves in water it breaks into two particles. the kf for water is 0.512 0c/m.

Answer : The amount of depression will be,

Explanation :  Given,

Mass of sodium chloride = 5 g

Mass of water = 0.250 kg

Molar mass of sodium chloride = 58.5 g/mole

Formula used :  

where,

= change in freezing point

i = Van't Hoff factor for electrolyte solution (sodium chloride) = 2

= freezing point constant =

m = molality

Now put all the given values in this formula, we get

Therefore, the amount of depression will be,

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach