The vapour pressure will be lowest for :
0.1 M sugar solution
0.1 M KCl solution
0.1 M Cu(NO3)2 solution
0.1 M AgNO3 solution
C.
0.1 M Cu(NO3)2 solution
Vapour pressure of a solvent is lowered by the presence of solute in it .Lowering in vapour pressure is a colligative property i.e. , it depends on the no. of particles present in the solution .Cu(NO3)2 give the maximum no. of ions (i.e. , 3) so it causes the greatest lowering in vapour pressure of water .
Blood cells will remain as such in :
hypertonic solution
hypotonic solution
isotonic solution
none of the above
When Cu reacts with AgNO3 solution , the reaction takes place is :
Oxidation of Cu
Reduction of Cu
Oxidation of Ag
Reduction of NO3-
Fluorine is the best oxidising agent because it has :
highest electron affinity
highest Eored
highest Eooxid
lowest electron effinity
Bleaching action of SO2 is due to its :
oxidising property
acidic property
basic property
reducing property
When I2 is passed through KCl , KF and KBr solutions :
Cl2 and Br2 are evolved
Cl2 is evolved
Cl2 , Br2 and F2 are evolved
none of the above
Ionic mobility of Ag+ is (Ag+ = 5 x 10-1 ohm-1 cm2 eq-1) :
5.2 x 10-9
2.4 x 10-9
1.52 x 10-9
8.25 x 10-9