NEETChemistrySolutions
The depression in freezing point of water observed for the same amount of acetic acid, trichloroacetic acid and trifluoroacetic acid increases in the order given above. Explain briefly
Options
- AThe depression in freezing point increases because acetic acid is less polar than the other two acids, leading
- BAmong H, Cl, and F, H is least electronegative while F is most electronegative. Then, F can withdraw electrons
- CThe depression in freezing point increases because trifluoroacetic acid has the highest molecular weight, resu
- DThe depression in freezing point increases because acetic acid is a weaker acid, leading to more significant c
Correct answer
B. Among H, Cl, and F, H is least electronegative while F is most electronegative. Then, F can withdraw electrons
Step-by-step solution
Correct Option is : (B) Among H, Cl, and F, H is least electronegative while F is most electronegative. Then, F can withdraw electrons towards itself more than Cl and H. Thus, trifluoroacetic acid can easily lose H+ ions i.e., trifluoroacetic acid ionizes to the largest extent. Now, the more ions produced, the greater is the depression of the freezing point