The concentration of Ag+ ion in a given saturated solution of AgCl at 25°C is 1.06 x 10-5 g ion L-1 .Thus , the solubility product of AgCl is :
0.453 x 10-10
0.530 x 10-10
1.12 x 10-10
2.12 x 10-10
Heat of combustion of C and CO are -394 and -285 kJ respectively , so heat of formation of CO in kJ/mol is :
- 218
- 109
+ 109
+ 218
The product formed is an isobar , if there is :
1 emission
1 emission
1 and 1 emission
2 and 2 emission
Solution of 0.l N NH4OH and 0.1 N NH4Cl has pH 9.25. Then , pKb of NH4OH is :
9.75
4.75
3.75
8.25
How many grams of CO2 will be produced by the complete combustion of 2 moles of ethanol ?
132 g
44 g
176 g
88 g
Which of the following changes with change in temperature ?
Mole fraction
Formality
% (w/W)
Molality
When is bombarded with - particle , a radioactive isotope of phosphorus is formed .Which particle is emitted along with ?
Deuteron
Proton
Electron
Neutron
The difference between heat of reaction at constant pressure and constant volume of the reaction :
2C6H6 (l) + 15O2 (g) 12CO2 + 6H2O (l)
at 25°C (in kJ) is :
- 7.43
3.72
- 3.72
7.43
For which reaction will H - E = 0 ? Assume that each reaction is carried out in an open container .
2CO2 (g) + O2 (g) 2CO2 (g)
PCl5 (g) PCl3 (g) + Cl2 (g)
H2 (g) + Br2 (g) 2HBr (g)
C (s) + 2H2O (g) 2H2 (g) + CO2 (g)