The standard molar heat of formation of ethane, CO2 and water (l) are respectively -21.1, -94.1 and -68.3 kcal. The standard molar heat of combustion of ethane will be
-372 kcal
162 kcal
-240 kcal
183.5 kcal
The solubility product of Ag2CrO4 is 32 x 10-12.What is the concentration of CrO4- ions in that solution?
2x 10-4 M
16x 10-4 M
8x 10-4 M
8x 10-8 M
A gaseous mixture containing He, CH4 and SO2 was allowed to effuse through a fine hole then find what molar ratio of gases coming out initially? (Given mixture contains He, CH4 and SO2 in 1 : 2: 3 mole ratio).
2: 2: 3
4: 4: 3
1: 1: 3
2.76 g of silver carbonate on being strongly heated yields a residue weighing
3.45g
3.0g
1.36g
2.16g
Among [Fe(H2O)6]+, [Fe(CN)6]3-, [Fe(Cl)6]3- species, the hybridisation state of the Fe atom are, respectively.
d2sp3, d2sp3, sp3d2
sp3d2,d2sp3, d2sp3
sp3d2, d2sp3,sp3d2
None of the above
The rate constant for forward reaction and backward reaction of hydrolysis of ester are 1.1 x10-2 and 1.5 x10-3 per minute respectively. Equilibrium constant for the reaction is
33.7
7.33
5.33
33.3
19.85 mL of 0.1 N NaOH reacts with 20 mL of HCl solution for complete neutralisation. The molarity of HCl solution is
9.9
0.99
0.099
0.0099