If molecular weight of KMnO4 is M, then its equivalent weight in acidic medium would be
M
M/2
M/5
M/3
20 volume H2O2 solution has a strenght of about
30%
6%
3%
10%
B.
6%
20 volumes of H2O2 means 20 L of oxygen is obtained at STP by the decomposition of 1L H2O2 solution
22.4 L oxygen is obtained from 68g H2O2.
N2 and H2 in 1 : 3 molar ratio are heated in a closed container having a catalyst. When the following equilibrium is attained, the total pressure is 10 atm and mole fraction of NH3 is 0.60. The equilibrium constant KP for dissociation of NH3 is
1.333 atm-2
0.75 atm-2
0.75 atm2
1.333 atm2
According to Le-Chatelier principle, adding heat a solid and liquid in equilibrium will cause the
amount of solid to decrease
amount of liquid to decrease
temperature to rise
temperature to fall
Positive deviation from ideal behaviour takes place because of
molecular interaction between atom and
molecular interaction between atom and
finite size of atoms and
finite size of atoms and
Solubility of AgCl at 20C is 1.435 x 10-3 g/L. The solubility product of AgCl is
1 x 10-5
1 x 10-10
1.435 x 10-5
108 x10-3
At 30C the solubility of Ag2CO3 (Ksp=8 x 10-12) would be greatest in one litre of
0.05 M Na2CO3
0.05 M AgNO3
pure water
0.05 N NH3