Calculate the change in boiling point when 0.402 moles of sodium chloride are added to 0.200 kilograms of water. Kf = -1.86°C/m; Kb = 0.512°C/m

-2.1°C

2.1°C

-7.5°C

7.5°C

Question

Calculate the change in boiling point when 0.402 moles of sodium chloride are added to 0.200 kilograms of water. Kf = -1.86°C/m; Kb = 0.512°C/m
		
-2.1°C
		
2.1°C
		
-7.5°C
		
7.5°C

faolan · Answer

Ethylene glycol, C2H6O2, is a nonvolatile substance unable to form ions in water. If 38.6 grams of ethylene glycol is dissolved in 175 grams of water, what is the freezing point of the solution? Kf = 1.86°C/m; Kb = 0.512°C/m
		
-6.61°C
		
1.82°C
		
6.61°C
		
-1.82°C