Chemistry : Equilibrium

At 60° and 1 atm, N₂O₄ is 50% dissociated into NO₂ then K_P is

• 1.33 atm

• 2 atm

• 2.67 atm

• 3 atm

pK_a increases in benzoic acid when substituent "x" is bonded at para-position, then "x" is

• -COOH

• -NO₂

• -CN

• -OCH₃

What will be the solubility product of AX₃?

• 27S⁴

• 4S³

• 36S⁴

• 9S³

Assertion : Aqueous solution of CoCl₂ is pink in colour. It turns blue in presence of conc. HCl.

Reason : It is due to the formation of [CoCl₄]^2-.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

The concentration of Ag⁺ ion in a given saturated solution of AgCl at 25°C is 1.06 x 10^-5 g ion L^-1 .Thus , the solubility product of AgCl is :

• 0.453 x 10^-10

• 0.530 x 10^-10

• 1.12 x 10^-10

• 2.12 x 10^-10

Solution of 0.l N NH₄OH and 0.1 N NH₄Cl has pH 9.25. Then , pK_b of NH₄OH is :

• 9.75

• 4.75

• 3.75

• 8.25

Predict the product of reaction of I₂ with H₂O₂ in basic medium

• I^-

• I₂O₃

• IO${}_3^{-}$

• I${}_3^{-}$

Which of the following is not hygroscopic?

• CsCl

• MgCl₂

• CaCl₂

• LiCl

What is the pH of0.01 M glycine solution? For glycine K_a1= 4.5x10^-3 and K_a2=1.7x10^-10 298 K.

• 3.0

• 10.0

• 7.06

• 8.2

Which of the following is not a characteristic of equilibrium?

• Rate is equal in both directions

• Measurable quantities are constant at equilibrium.

• Equilibrium occurs in reversible condition.

• Equilibrium occurs only in open vessel at constant temperature.