Acid Base More Practice

What is the conjugate acid in the following equation?

• PO₄^3- 
• HNO₃ 
• NO₃^- 
• HPO₄^2-
  

What is the pOH of a 2.4 x 10^-8 M solution of HNO₃?

• 7.6

• 6.4

• 4.0 x 10^-7

• 8.0

What are the products of the following reaction?
H₂SO₄  +  KOH  -->  

• HK  +  HSO₄
• H₂O  +  KSO₄
• H₂O  +  K₂SO₄
• H₂  +  K₂SO₄

If the pH of a solution is 5.6 the pOH is

• 6.5
• 12.4
• 8.4
• 5.6

What is the molarity of a 30 mL HCl which is neutralized by 48 mL of 0.1 M NaOH?

HCl + NaOH --> H₂O + NaCl

• 0.16 M

• 6.25 M

• 0.063 M

The pH of a solution is 8.43. What is the [H₃O⁺]concentration?

• 3.7 x 10 ^-9

• 1.0 x 10^-8.43

• 2.7 x 10^-6

• 1.0 x 10^-14

If the [OH^-] of a solution is 2.7 x 10^-4 M, the pOH of the solution is

• 10.44

• 1.00

• 3.57

• -4.43

Find the pH of a solution with [OH-] = 8.41 x 10^-4.

• 3.08

• 10.92

• 9.88

• 11.23

dissociation of weak acid, HA, is represented by following equation :

HA(aq) + H₂O(l) ⇌ H₃O⁺(aq) + A^-(aq)

The equilibrium constant for this reaction is represented by K_a . Which of the following equation represents expression of equilibrium constant, K_a?

• 
• 
• 
• 

Which of the following is the correct balanced equation showing the dissociation of sulfuric acid into ions?

• H₂SO₄ (aq) → H⁺ (aq) + SO₄^–(aq)

• H₂SO₄ (aq) ⇌ 2H⁺ (aq) + SO₄^2- (aq)

• HSO₄ (aq) → H⁺(aq) + SO₄^–(aq)

• H₂SO₄ (aq) → 2H⁺ (aq) + SO₄^2- (aq)