CBSE
Multiple Choice QuestionsIn the reaction :
H2 + I2 2HI
In a 2 litre flask 0.4 moles of each H2 and I2 are taken .At equilibrium 0.5 moles of HI are formed .What will be the value of equilibrium constant ,Kc ?
20.2
25.4
0.284
11.11
40 mL of 0.1 M ammonia solution is mixed with 20 mL. of 0.1 M HCl. What is the pH of the mixture? (pKb, of ammonia solution is 4.74)
4.74
2.26
9.26
5.00
KI and CuSO4 solution when mixed , give :
CuI2 + K2SO4
Cu2I2 + K2SO4
K2SO4 + Cu2I2 + I2
K2SO4 + CuI2 + I2
Which of the following is a Lewis base ?
NaOH
NH3
BCl3
All of these
For a phase change
F2 formed by reacting K2MnF6 with
SbF5
MnF3
KSbF6
MnF4
Which among the following is the strongest acid ?
HF
HCl
HBr
HI
When 10 mL of 0.1 M acetic acid (pKa = 5.0) is titrated against 10 ml of 0.1 M ammonia solution (pKb = 5.0), the equivalence point occurs at pH
5.0
6.0
7.0
9.0
For reaction, 2NOCl (g) 2NO (g) + Cl2 (g), Kc at 427°C is 3 × 10-6 L mol-1. The value of Kp is nearly
7.50 × 10-5
2.50 × 10-5
2.50 × 10-4
1.75 × 10-4
For the chemical equilibrium,
CaCO3(s) CaO(s) + CO2(g)
can be determined from which one of the following plots?
