C (s) + O2 (g) → CO2 (g); H = -94kcal
2CO (g) + O2 (g) → 2CO2 (g); H = -135 kcal.
The heat of formation of CO (g) is
-26.4 kcal
41.2 kcal
26.4 kcal
229.2 kcal
Conjugate acid of HF is
H+
HF
F
H2F2
D.
H2F2
The conjugate acid of HF is H2F2.
An electron from one Bohr stationary orbit can go to next higher orbit
by emission of electromagnetic radiation
by absorption of any electromagnetic radiation
by absorption of electromagnetic radiation of particular frequency
without emission or absorption of electromagnetic radiation
Splitting of spectrum lines in magnetic field is
Stark effect
Raman effect
Zeeman effect
Rutherford effect
For the following reaction in gaseous phase
CO (g) + O2 (g) → CO2 (g) Kp/ Kc is
(RT)1/2
(RT)-1/2
(RT)
(RT)-1
On adding 1 g arsenic to 80 g benzene, the freezing' point of benzene is lowered by 0.19°C. The formula of arsenic is
As
As2
As3
As4
The standard emf of a cell, involving one electron change is found to be 0.591 V at 25°C. The equilibrium constant of the reaction is (F = 96500 C mol-1)
1.0 × 101
1.0 × 105
1.0 × 1010
1.0 × 1030