KF combines with HF to form KHF2. This compound contains the species
K+, F- and H+
K+, F- and HF
K+ and [HF2]-
[KHF]+ and F2
A vessel of one litre capacity containing 1 mole of SO3 is heated till a state of equilibrium is attained.
2SO3 (g) 2SO2 (g) + O2 (g)
At equilibrium, 0.6 moles of SO2 had formed. The value of equilibrium constant is
0.18
0.36
0.45
0.68
What is the molarity of H2SO4 solution that has a density of 1.84 g/cc at 35C and contains 98% by weight?
4.18 M
8.14 M
18.4 M
18 M
The variation of volume V, with temperature T, keeping pressure constant is called the coefficient of thermal expansion () of a gas, i.e., = . For an ideal gas is equal to
T
P
The molecules having the same hybridization, shape and number of lone pairs of electrons are
SeF4, XeO2F2
SF4, XeF2
XeOF4, TeF4
SeCl4, XeF4
2.5 g of the carbonate of a metal was treated with 100 mL of 1N H2SO4. After the completion of the reaction, the solution was boiled off to expel CO2 and was then titrated against 1N NaOH solution. The volume of alkali that would be consumed, if the equivalent weight of the metal is 20
50
25
75
100
A.
50
Equivalent weight of metal carbonate = 20 + 30 = 50
2.5 gm of metal carbonate = = 0.05 eq.
Number of equivalent of H2SO4 would have reacted = 0.05
Number of equivalent of H2SO4 taken = = 0.1
Number of equivalent weight of H2SO4 reamins unreacted = 0.1 - 0.05 = 0.05 eq.
Number of equivalent of alkali consumed = 0.05 eq.
milli eq = Normality Volume in mL
1.0 V = 0.05 1000
V = = 50 mL
The equilibrium constant for mutarotation -D Glucose -D Glucose is 1.8. What percentage of form remains at equilibrium?
35.7
64.3
55.6
44.4
The M - O- M bond angles in MO (where M is halogen) is in the order
Br2O > Cl2O > F2O
F2O > Br2O > Cl2O
F2O > Cl2O > Br2O
Cl2O > F2O > Br2O