Acid and Base Strength and Concentration
Chemistry ⇒ Acids, Bases, and Salts
Acid and Base Strength and Concentration starts at 9 and continues till grade 12.
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See sample questions for grade 12
A solution has a pH of 3. Is it acidic, basic, or neutral?
A solution has a pH of 9. Is it acidic, basic, or neutral?
A student prepares two solutions: Solution A is 0.01 M HCl and Solution B is 1 M acetic acid. Which solution has a lower pH?
Define acid strength.
A student prepares two solutions: Solution A is 0.01 M HCl and Solution B is 1 M acetic acid. Which solution has a lower pH?
A 0.05 M solution of a weak base has a pOH of 4.5. Calculate the base dissociation constant (Kb) for this base.
A 0.2 M solution of a weak monoprotic acid (HA) has a pH of 2.7. Calculate the acid dissociation constant (Ka) for HA.
A student adds 0.1 mol of HNO3 (a strong acid) to 1 L of water and separately adds 0.1 mol of CH3COOH (a weak acid) to another 1 L of water. Compare the electrical conductivity of the two solutions and explain the reason for any difference.
Which of the following acids is the weakest? (1) HCl (2) HNO3 (3) H2SO4 (4) HCN
Which of the following bases is the strongest? (1) NH3 (2) NaOH (3) Al(OH)3 (4) Mg(OH)2
Which of the following is a property of a concentrated acid? (1) High degree of ionization (2) Large number of acid molecules per unit volume (3) Always low pH (4) Always strong acid
Which of the following is a strong acid? (1) Hydrochloric acid (HCl) (2) Acetic acid (CH3COOH) (3) Carbonic acid (H2CO3) (4) Hydrofluoric acid (HF)
A 0.1 M solution of a strong base has a pOH of _______.
A 0.1 M solution of HCl has a pH of _______.
Fill in the blank: The acid dissociation constant (Ka) is a measure of _______.
Fill in the blank: The base dissociation constant (Kb) is used to measure the _______ of a base.
State whether the following statement is true or false: A strong acid always has a low pH, regardless of its concentration.
State whether the following statement is true or false: The Ka value of a strong acid is much greater than 1.
True or False: A 1 M solution of acetic acid is stronger than a 0.1 M solution of hydrochloric acid.
True or False: The concentration of a base affects its pH.
