1.Identify the conjugate acid of SO42– A) H2SO4 B) HSO4– C) H2SO3 D) H3O+ E) SO3

Question

1.Identify the conjugate acid of SO42–

A) H2SO4

B) HSO4–

C) H2SO3

D) H3O+

E) SO32–

2.Which of the following substance is/are acidic

Urine

Saliva

Milk

Stomach juice

All of the above

3.The equilibrium constant expression for the reaction: N2 (g) + O2 (g) 2NO (g) is

A) Kc = 2[NO]/[N2][O2]

B) Kc = [N2][O2]/2[NO]

C) Kc = [N2][O2]/[NO]2

D) Kc = [NO]2/[N2][O2]

E) Kc = [NO]/[N2][O2]

4.Which of these situations will result if some CH4(g) is removed from the reaction

CO(g) + 3H2(g) CH4(g) + H2O(g) at equilibrium?

A) H2O will be consumed.

B) More CH4 and H2O will be produced.

C) Kp will decrease.

D) More CO will be produced.

E) No change will occur.

5.The hydronium ion and the hydroxide ion, in that order, are:

A) H3O+, OH+

B) H3O+, OH-

C) OH-, H+

D) OH-, H3O-

E) H3O-, OH-

6.Which of the following is a weak acid

A) HCl

B) HNO3

C) HNO2

D) HBr

E) H2SO4

7.Which of the following is a polyprotic acid

A) HNO2

B) HNO3

C) H2SO4

D) HBr

E) H3PO4

8.Which of the following does not fit the definition of a Brønsted Base?

A) NH4+

B) NH3

C) H2O

D) CO32–

E) HCO3–

9.Which of the following is not a conjugate acid-base pair?

A) H2O and OH–

B) H2O and H3O+

C) H3O+ and OH–

D) HO2– and H2O2

E) O22– and HO2–

10.Which of the following solutions is acidic?

A) [H3O+] = 7.0 x 10-7 M

B) [H3O+] = 1.5 x 10-10 M

C) [H3O+] < 7.0 x 10-7 M

D) [H3O+] > 7.0 x 10-7 M

E) [H3O+] = 1.0 x 10-14 M

Explanation / Answer

1) SO42- + H+ <--------> HSO4-

Conjugate acid of SO42- = HSO4-

2) Milk contains lactica caid and has a pH of around 6.5 to 6.7 .So, it is an acid.

Urine has a pH of 6.5 to 7. So, it also behaves as an acid.

Stomach juice basically contains gastric acid.So, it is also an acid.

Saliva is also ann acid

So, the correct option is .E) all of the above

3) N2(g) + O2(g) <------------> 2NO(g)

Kc = [NO]2/{[N2]*[O2]}

So, the correct option is :- D

4) B) More CH4 and H2O will be produced.

5) B) H3O+, OH-

6) C) HNO2

7) A polyprotic acid is one which can liberate more than one protons.

Thus, H2SO4 & H3PO4 are both polyprotic

8) A Bronsted base is one which can accept H+ ions

Thus, except NH4+ all others are bronsted bases

9) C) H3O+ and OH–

10) D) [H3O+] > 7.0 x 10-7 M

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.