Multiple Choice
What is the initial pH for the titration of 30.0 mL of 0.850 M NH3 with 0.100 M HCl. Kb for NH3 = 1.8 × 10−5.
18. Aqueous Equilibrium
Titrations: Weak Base-Strong Acid
Back18. Aqueous Equilibrium
Titrations: Weak Base-Strong Acid
- Multiple ChoiceThe plot below illustrates which type of titration?
- Multiple Choice
Calculate the pH of the solution resulting from the mixing of 75.0 mL of 0.100 M NaC2H3O2 and 75.0 mL of 0.30 M HC2H3O2 with 0.0040 moles of HBr.
- Multiple Choice
In order to create a buffer 7.321 g of potassium lactate is mix with 550.0 mL of 0.328 M lactic acid, HC3H5O3. What is the pH of the buffer solution after the addition of 300.0 mL of 0.100 M hydrobromic acid, HBr? The Ka of HC3H5O3 is 1.4 × 10−4.
- Multiple Choice
Consider the titration of 100.0 mL of 0.100 M CH3NH2 with 0.250 M HNO3 at the equivalence point. What would be the pH of the solution at the equivalence point? The Kb of CH3NH2 is 4.4 × 10−4.
- Multiple Choice
A solution contains 100.0 mL of 0.550 M sodium nitrite, NaNO2. Find the pH after the addition of 180.0 mL of 0.400 M HClO4. The Ka of HNO2 is 4.6 × 10−4.
- Open Question
What quantity of NAG3 was required to reach the equivalence point in the titration?
- Multiple ChoiceA 100.0 mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3. Determine the pH of the solution after the addition of 200.0 mL of HNO3. The Kb of NH3 is 1.8 × 10^-5.
- Multiple ChoiceA 20.00-mL sample of 0.150 M NH3 is being titrated with 0.200 M HCl. What is the pH after 15.00 mL of HCl has been added? Kb of NH3 = 1.8 × 10⁻⁵
- Multiple ChoiceA 20.00-mL sample of 0.150 M NH3 is being titrated with 0.200 M HCl. What is the pH after 25.00 mL of HCl has been added? Kb of NH3 = 1.8 × 10⁻⁵
- Multiple ChoiceWhat is the pH of a solution when 40.00 mL of 0.1000 M HCl is added to a 50.00 mL aliquot of 0.1200 M ethylamine (CH3CH2NH2) with a Kb of 5.6 x 10^-4?
- Multiple ChoiceConsider the titration of 50.0 mL of 0.20 M NH3 (Kb=1.8×10⁻⁵) with 0.20 M HNO3. Calculate the pH after the addition of 50.0 mL of the titrant at 25 °C.
- Multiple ChoiceConsider the titration of a 25.0-mL sample of 0.175 M CH3NH2 with 0.150 M HBr. What is the initial pH of the CH3NH2 solution before any HBr is added?
- Multiple ChoiceConsider the titration of a 26.0-mL sample of 0.185 M CH3NH2 (Kb=4.4×10⁻⁴) with 0.155 M HBr. What is the pH after adding 6.0 mL of HBr?
- Multiple ChoiceConsider the titration of a 26.0 mL sample of 0.175 M CH3NH2 (Kb = 4.4 × 10⁻⁴) with 0.150 M HBr. Determine the pH at 5.0 mL of added acid.