Acid - Base equilibrium

According to Arrhenius acid-base theory, an acid is

• an H+ acceptor

• a H+ donor

• a substance that produce H+ in water

• anything with H+

Which reactant in the following equation is a Bronsted acid ?

• ammonium

• ammonia

• hydroxide

• water

Choose the Bronsted base on the left hand side

• H3O+

• SO4 2-

• HSO4-

• H2O

From the following list of equation, select the one that does NOT represent Bronsted acid-base reactions

• HCl + H2O --> H3O+ + Cl-

• N2 + 3H2 --> 2NH3

• H2PO4- + H2O --> HPO4 2- + H3O+

• HCO3- + OH- --> CO3 2- + H2O

What does the equation in the image correspond to ?

• pKa

• Ka

• pH

• [H+]

What is the pH of a 1.53 x 10^-6 M solution of HCl?

• 5.82

• 8.18

• 6.99

• 4.15

Which of these Ka values corresponds to the weakest (least strong) acid?

• 4 x 10^-4

• 5 x 10^-4

• 6 x 10^-4

• 7 x 10^-4