Class XI Chemistry Equilibrium 9

Attempt now to get your rank among 496 students!

Question 1

Which of the nitrates on strong heating leaves the metal as the residue -

• AAgNO₃
• BPb(NO₃)₂
• CCu(NO₃)₂
• DAl(NO₃)₃

Question 2

The ion which is not precipitated by H₂S in the presence of HCl is -

• ACu²⁺
• BAg⁺
• CPb²⁺
• DAl³⁺

Question 3

The two equilibria, AB A⁺ + B ^¯ and AB + B ^¯ A are simultaneously maintained in a solution with equilibrium constants K₁ and K₂ respectively. The ratio of A⁺ to AB₂^– in the solution is -

• ADirectly proportional to the concentration of B
• BInversely proportional to the concentration of B
• CDirectly proportional to the square of the concentration of B
• DInversely proportional to the square of the concentration of B

Question 4

When two reactants, A and B are mixed to give products C and D, the reaction quotient Q, at the initial stages of the reaction:

• Azero
• Bdecrease with time
• Cis independent of time
• Dincrease with time

Question 5

50 mL of 0.2 M ammonia solution is treated with 25 mL of 0.2 M HCl. If pK_b of ammonia solution is 4.75, the pH of the mixture will be:

• A3.75
• B4.75
• C8.25
• D9.25

Question 6

For sparingly soluble salt A_pB_q the relationship between solubility product L_s and its solubility (s) is :

• AL_s=s^p+qp^pq^q
• BL_s=s^p+qp^qq^p
• CL_s=s^pqp^pq^q
• DL_s=spq(pq)^q+p

Question 7

The solubility product of BaCl₂ is 4x10^-9. Its solubility in mo/L is

• A4x10^-3
• B4x10^-9
• C10^-3
• D10^-9

Question 8

Variation of log₁₀K with is shown by the following graph in which straight line is at 45 º, hence ΔH º is:

• A+4.606 cal
• B–4.606 cal
• C2 cal
• D–2 cal

• 496 attempts
• 5 upvotes
• 15 comments