The freezing point of water is depressed by 0.37°C in a 0.01 molal NaCl solution. The freezing point of 0.02 molal solution of urea is depressed by
0.37°C
0.74°C
0.185°C
0°C
Chloroform, when kept open, is oxidised to :
CO2
COCl2
CO2, Cl2
None of these
B.
COCl2
Chloroform is oxidised to a poisonous gas, phosgene (COCl2) by atmospheric oxidation.
CHCl3 + O → COCl2 + HCl
Blood cells will remain as such in:
hypertonic solution
hypotonic solution
isotonic solution
none of the above
The mixture that forms maximum boiling azeotrope is:
Ethanol + Water
Acetone + Carbon disulphide
Heptane + Octane
Water + Nitric acid
For an ideal solution, the correct option is :
Δmix V ≠ 0 at constant T and P
Δmix H = 0 at constant T and P
Δmix G = 0 at constant T and P
Δmix S = 0 at constant T and P