Titration Calculations
Chemistry ⇒ Acids, Bases, and Salts
Titration Calculations starts at 10 and continues till grade 12.
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Describe the steps involved in performing a titration to determine the concentration of an acid.
During a titration, why is it important to swirl the flask while adding titrant?
Explain why a burette is preferred over a pipette for delivering the titrant in a titration.
What is the purpose of a titration in chemistry?
A 0.200 mol/L solution of HNO₃ is titrated with 0.100 mol/L NaOH. If 50.0 mL of NaOH is required, what volume of HNO₃ was titrated?
A 10.0 mL sample of 0.500 mol/L HCl is titrated with NaOH. If the endpoint is reached after 20.0 mL of NaOH is added, what is the concentration of the NaOH?
A 20.0 mL sample of 0.250 mol/L H₂SO₄ is titrated with NaOH. What volume of 0.500 mol/L NaOH is needed to reach the equivalence point?
A 25.0 mL sample of 0.100 mol/L Na₂CO₃ is titrated with HCl. What volume of 0.200 mol/L HCl is required to reach the endpoint? (Na₂CO₃ + 2HCl → 2NaCl + H₂O + CO₂)
Which of the following best describes the endpoint of a titration?
(1) The point where the indicator changes color
(2) The point where the reactants are present in stoichiometric amounts
(3) The point where the pH is 7
(4) The point where the titrant is first added
Which of the following equations is used to calculate the concentration of an unknown solution in a titration?
(1) M₁V₁ = M₂V₂
(2) C₁V₁ = C₂V₂
(3) n₁V₁ = n₂V₂
(4) M₁V₁/n₁ = M₂V₂/n₂
Which of the following indicators is most suitable for a strong acid-strong base titration?
(1) Methyl orange
(2) Phenolphthalein
(3) Bromothymol blue
(4) Litmus
Which of the following is a primary standard substance commonly used in acid-base titrations?
(1) Sodium carbonate
(2) Hydrochloric acid
(3) Sulfuric acid
(4) Ammonia
A titration curve plots ________ against volume of titrant added.
Fill in the blank: In a titration, the solution being analyzed is called the ________.
Fill in the blank: The ________ is the point in a titration where the amount of titrant added is exactly enough to react with all of the analyte.
Fill in the blank: The ________ is the solution of known concentration used in a titration.
True or False: The equivalence point in a titration is always the same as the endpoint.
True or False: The molarity of a solution is defined as the number of moles of solute per liter of solution.
True or False: The stoichiometry of the reaction must be considered when calculating concentrations in a titration.
True or False: The volume of titrant required to reach the endpoint is always directly proportional to the concentration of the analyte.
