The pair of compound which cannot exist together in solution is
NaHCO3 and NaOH
NaHCO3 and H2O
NaHCO3 and Na2CO3
Na2CO3 and NaOH
Which is most basic in character ?
CsOH
KOH
NaOH
LiOH
A.
CsOH
Among the given options, CsOH is the most basic in character.
Would gaseous HCl be considered as an Arrhenius acid ?
Yes
No
Not known
Gaseous HCl does not exist
The degree of hydrolysis in hydrolytic equilibrium
A- + H2O HZ + OH-
at salt concentration of 0.001 M is :
(Ka = 1 × 10-5)
1 × 10-3
1 × 10-4
5 × 10-4
1 × 10-6
The reaction quotient 'Q' is useful in predicting the direction of the reaction. Which of the following is incorrect?
If Qc < Kc, the forward reaction is favoured
If Qc > Kc, the forward reaction is favoured
If Qc >Kc, the forward reaction is favoured and Qc =Kc, no reaction occur.
None of these
Equivalent weight of an acid :
depends on the reaction involved
depends upon the number of oxygen atoms present
is always constant
None of the above
Two moles of PCl5 were heated in a closed vessel of 2 L. At equilibrium, 40% of PCl5 is dissociated into PCl3 and Cl3. The value of equilibrium constant is :
0.53
0.267
2.63
5.3
The solubility product of Barium sulphate is 1.5 × 10-9 at 18°C. Its solubility in water at 18°C is :
1.5 × 10-9
1.5 × 10-5
3.9 × 10-9
3.9 × 10-5