Equilibrium

What will be the pH value of 0.05 M Ba(OH)₂ solution?

• 12

• 13

• 1

• 12.96

N₂ and H₂ in 1 : 3 molar ratio are heated in a closed container having a catalyst. When the following equilibrium ${\mathrm{N}}_2\left(\mathrm{g}\right)+3{\mathrm{H}}_2\left(\mathrm{g}\right) \rightleftharpoons 2{\mathrm{NH}}_3\left(\mathrm{g}\right)$ is attained, the total pressure is 10 atm and mole fraction of NH₃ is 0.60. The equilibrium constant K_P for dissociation of NH₃ is

• 1.333 atm^-2

• 0.75 atm^-2

• 0.75 atm²

• 1.333 atm²

According to Le-Chatelier principle, adding heat a solid and liquid in equilibrium will cause the

• amount of solid to decrease

• amount of liquid to decrease

• temperature to rise

• temperature to fall

Solubility of AgCl at 20$°$C is 1.435 x 10^-3 g/L. The solubility product of AgCl is

• 1 x 10^-5

• 1 x 10^-10

• 1.435 x 10^-5

• 108 x10^-3

At 30$°$C the solubility of Ag₂CO₃ (K_sp=8 x 10^-12) would be greatest in one litre of 

• 0.05 M Na₂CO₃

• 0.05 M AgNO₃

• pure water

• 0.05 N NH₃

Which of the following can behave as an acid as well as base ?

• HCl

• H₂SO₄

• H₂O

• NH₃

Ammonium ion is

• a conjugate acid

• a conjugate base

• neither acid nor a base

• both an acid and a base

Which of the following oxide does not form acidic aqueous solution?

• N₂O₃

• NO₂

• N₂O₅

• NO

Which of the following salt does not get hydrolysed in water?

• KClO₄

• NH₄Cl

• CH₃COONa

• None of these

In the reaction: H₂ + I₂ → HI

In a 2L 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 K_c?

• 20.2

• 25.4

• 0.284

• 11.1