Acids and Bases

Calculate the pH of a 0.35 M solution of KNO2 (Ka = 4.0 x 10-4). KNO2 is a salt of a strong base KOH and a weak acid HNO2 and therefore, the solution will be basic. Dissociate the salt and write the reaction of … Read more

What is the pH of a 0.650 M solution of pyridine? Kb = 1.5 × 10-9 Pyridine is a weak base and the first step is to write the reaction of the weak base with water. The formula of pyridine … Read more

Calculate the pH of the 0.26 M solution of NH4ClO3 (Kb NH3 = 1.8 x 10-5). Ammonium chlorate (NH4ClO3) is the salt of a weak base ammonia (NH3) and a strong acid HClO3, so it yields an acidic solution.   NH3 + HClO3 → NH4ClO3 … Read more

Calculate the pH of a 1.0 M solution of sodium acetate (CH3CO2Na) considering that the Ka of acetic acid (CH3CO2H is 1.7 x 10-5. CH3CO2Na is a salt of a strong base NaOH and a weak acid CH3CO2H therefore, the solution will be basic. … Read more